Tux's Links

This is a list of linux weblinks. Let me know if you know of more (it'll take a few months, since I have a backlog). Also, if any webpage seems inaccurate or uses foul language, please email me and I'll take them off.

New License: This webpage is now left-copyright, i.e., copyright is GPLv2. In a nutshell, you are free to copy and modify, but you must make any improvement available (preferably on the internet). For more, read

http://www.gnu.org/licenses/gpl-2.0.html

If you want your page off or have any comments, email me at shengchieh ["AT"] linuxmail [period] org . Be warned: I do not see this email often. Please be patient. Also, I am wwwaaaaayyyyyyyy behind. You are welcomed to suggest links, but do not expect them to be added for an year. Fyi, this website do not get much hits. Consider linking to wikis, if topic is appropriate.

Feel free to bookmark this page. If you wish to link to this page from your website, you can add the following lines to your webpage.

<a href="http://shengchieh.50webs.com/tuxslinks.html">
<img src="http://i63.tinypic.com/2ebx4kw.jpg"
width="200" height="100" border="0"></a>

to your webpage. Those lines will produce the same logos at the top of this webpage and the picture will link to this page. [1]

DISCLAIMER: I do NOT claim the below websites are 100% accurate. Use their informations at your own risk.

Sheng-Chieh
6/2/19

Directories
Organizations
Documentations
Hardware HowTo
Hardware
Software HowTo
Softwares
Console Commands
Distributions
Retailers
Other linux-related stuffs
Programming
Others

Hardware

Graphics Board
http://www.zotacusa.com/
(commercial; Zotac)

Motherboard
http://www.arduino.cc/ (non-commercial; Arduino)
http://www.minnowboard.org/ (non-commercial; MinnowBoard)
http://www.parallella.org/ (commercial; parallel computing; Parallella)
https://www.sparkfun.com/ (commercial; SparkFun; [Arduino stuffs])
http://www.mouser.com/MinnowBoard/ (commercial; Mouser Electronics; MinnowBoard distributor)
http://beagleboard.org/ (commercial; BeagleBoard)
http://www.digikey.com/product-highlights/us/en/texas-instruments-pandaboard/686 (commercial; PandaBoard ES)
http://www.hummingbirdkit.com/ (commercial; Hummingbird robotics kit)
http://pibow.com/ (commercial; Pimoroni; sells pibow [raspberry pi cover])
http://www.coridium.us/index.html (commercial; Coridium; PRO board)
https://www.olimex.com/(commercial; Olimex; various motherboard including A13 board, LIME, Arduino)
https://compulab.co.il/ (commercial; CompuLab)
http://www.hardkernel.com/renewal_2011/main.php (commercial; ODROID)
http://www.arm9board.net/sel/default.aspx (commercial; Arm9board)
http://www.aaeonusa.com (commercial; AAEON USA)
http://us.axiomtek.com/index.asp (commercial; Axiomtek)
http://www.networkworld.com/news/2013/110113-intel39s-open-source-galileo-computer-on-275529.html (Intel's open-source Galileo computer on sale for $69.90; 11/1/13)
http://www.myirtech.com/ (commercial; MYIR)
http://www.aaeon.com/en/ (commercial; AAEON Technology, Inc; tablet, embeddee)
https://www.gumstix.com/ (commercial; Gumstix; various boards including pepper board)
http://www.acrosser.com/index.php -> (commercial; Acrosser; Single Board Computer)
http://www.artila.com/ (commercial; Artila Electronics)
http://www.arm9board.net/sel/default.aspx (commercial; Arm9board)
https://getchip.com (commercial; C.H.I.P.; include whole mini-computer)
https://en.wikipedia.org/wiki/List_of_single-board_computers (List of single-board computers [wikipedia])

Robot
http://www.makeblock.cc/ http://alphalem.cdeom/ (commercial; Alphalem)

Software HowTo

Accounting
http://svn.gnucash.org/docs/help/titlepage.html (non-commercial: GNUcash; docs)
http://code.neil.williamsleesmill.me.uk/gnucash-help.html (non-commercial: GNUcash; docs)

Archive
http://www.tecmint.com/command-line-archive-tools-for-linux/ (5 Best Command Line Archive Tools for Linux - Part 1; 6/1/14)

Browsers
https://support.mozilla.org/en-US/kb/keyboard-shortcuts-perform-firefox-tasks-quickly (firefox keyboard shortcuts)
http://www.aadmm.de/en/index.htm (MultiOS Browser Test)
https://support.mozilla.org/en-US/kb/keyboard-shortcuts-perform-firefox-tasks-quickly (Keyboard shortcuts - Perform common Firefox tasks quickly)
http://www.adobe.com/shockwave/welcome/ (shockwave and flash test)
http://lesliefranke.com/files/reference/firefoxcheatsheet.html (firefox cheat sheet)
http://sandbox.pixelpoems.com/til/mozfavs/ (list of links; mozilla bookmarks)
http://www.junauza.com/2009/03/three-easy-steps-to-set-up-anonymous.html (Anonymous Web Browsing)
http://tuxarena.blogspot.com/2009/04/3-tweaks-to-speed-up-firefox-3-and-free.html (3 Tweaks to Speed Up Firefox 3 and Free Memory)
http://www.verot.net/firefox_tmpfs.htm (Speed up Firefox with tmpfs)
http://webupd8.blogspot.com/2009/05/speed-up-firefox-by-mounting-profile-in.html (Speed up Firefox by mounting the profile in tmpfs)
http://claudecat17.tumblr.com/post/84902782891/easily-fix-firefox-29 (Easily Fix Firefox 29 [change to look like FF 28]; 5/14)
http://www.ghacks.net/2014/04/26/turn-new-firefox-29-old-firefox/ (How to turn the new Firefox 29 into the old Firefox; 4/26/14)
http://tuxarena.blogspot.com/2009/08/5-opera-tips-and-tricks.html (5 Opera Tips and Tricks; 8/10/09)
http://askubuntu.com/questions/577286/how-to-remove-t-canonical-from-firefox-browser-searches-made-on-duckduckgo (search - How to remove `t=canonical` from Firefox browser searches made on DuckDuckGo?; 3/14/15)
http://www.techrepublic.com/article/firefox-helps-you-cover-your-assets-with-latest-tracking-protection-feature/ (Firefox helps you cover your assets with latest Tracking Protection feature; 4/10/15)
http://www.pcworld.com/article/2960741/browsers/tested-how-flash-destroys-your-browsers-performance.html (Tested: How Flash destroys your browser's performance; 8/7/15)
http://kb.mozillazine.org/Firefox_:_FAQs_:_About:config_Entries (firefox; About:config)
http://codeverge.com/mozilla.support.seamonkey/stopping-automatic-reload-of-a-page/1360720 (Stopping automatic reload of a page (on SM); 5/11/06)
) https://www.howtoforge.com/tutorial/vivaldi-browser-introduction-on-linux/ (An Introduction to Vivaldi Browser on Linux; 9/6/16)
https://www.opera.com/docs/switches/ (opera; key shortcut)
http://help.opera.com/opera/Linux/2393/en/ (opera help)

CD/DVD Burner
http://www.techdrivein.com/2010/11/nero-linux-4-never-knew-nero-had-linux.html (Nero Linux 4 - Never Knew Nero had a Linux Version!; 10/24/10)

Children
http://maketecheasier.com/configure-linux-for-children/2010/07/21 (How to Configure Linux for Children; 7/21/10)

Compiling
http://www.maximumpc.com/article/howtos/howto_compile_programs_from_source_linux (Compile Programs From Source in Linux)
http://www.tuxfiles.org/linuxhelp/softinstall.html (Installing software from source in Linux)
http://www.linux.lk/software/compiling.php (Compiling Software Packages; 2003)
http://howto.wired.com/wiredhowtos/index.cgi?page_name=compile_software_from_source_code;action=display;category=Work (Compile Software from Source Code)
http://liquidweather.net/howto/index.php?id=82 (compiling software)

Container
http://thenewstack.io/life-post-container-world/ (Life in a Post-Container World and Why Linux Will Play a Diminished Role; 9/15)

Cloud
http://www.linuxjournal.com/content/introduction-openstack (Introduction to OpenStack; 10/13/13)

Data Recovery
http://www.linux.org/threads/undelete-files-on-linux-systems.4316/ (; Undelete Files on Linux Systems7/22/13)
http://www.howtoforge.com/data_recovery_from_accidentally_deleted_files_or_crashed_drives_in_redhat_centos_and_fedora_linux (Data recovery from accidentally deleted files or crashed drives in Redhat, CentOS and Fedora Linux; 4/1/14)

Desktop Environment
http://wiki.xfce.org/howto/customize-menu (Customize the Xfce menu)
http://pclosmag.com/download.php?f=XfceTipsTricksSE.pdf (PCLinuxOS magazine, but all about XFCE)
https://wiki.gnome.org/ (GNOME Wiki)
http://wiki.xfce.org/ (XFCE Wiki)
http://xahlee.info/linux/linux_xfce_keyboard_shortcuts.html (Linux: Xfce Keyboard Shortcuts)

Development
http://www.datamation.com/open-source/how-to-get-started-in-linux-development-linuxcon.html (How To Get Started In Linux Development :Linuxcon; 9/20/13)

Directory Content Manager
http://sixrevisions.com/git/interactive-git-tutorials/ (Interactive Git Tutorials1/5/15)

Distro
http://www.howtogeek.com/206240/how-to-tell-what-distro-and-version-of-linux-you-are-running/ (How to Tell What Distro and Version of Linux You Are Running; 12/28/14)

Download
http://www.linuxwaves.com/Download/ (various)

Dual Boot (Linux & Window)
http://www.linuxbsdos.com/2012/09/12/7-tips-for-dual-booting-linux-distributions-and-windows/ (7 tips for dual-booting Linux distributions and Windows; 9/12/12)

ebook
http://opensource.com/life/14/9/open-source-tools-prepare-your-ebooks-publication (Open source tools to prepare your ebooks for publication; 9/25/14)

Email
http://www.howtoforge.com/how-to-encrypt-mails-with-ssl-certificates-s-mime (How To Encrypt Mails With SSL Certificates (S/MIME); 11/29/11)
http://www.howtoforge.com/thunderbird-email-encryption-with-gnupg2 (Thunderbird Email Encryption with GnuPG2; 6/20/14)
https://www.linux.com/learn/tutorials/784165-how-to-encrypt-email-in-linux (How to Encrypt Email in Linux; 8/15/14)
https://linuxconfig.org/encrypt-your-email-with-gpg-thunderbird-and-enigmail (Encrypt Your Email With GPG, Thunderbird, and Enigmail; 4/3/17)
http://www.everydaylinuxuser.com/2016/11/an-everyday-linux-user-guide-to.html (An Everyday Linux User Guide To The Thunderbird Email Client; 11/2/16)
https://fedoramagazine.org/4-addons-privacy-thunderbird/ (4 add-ons to improve your privacy on Thunderbird)

Flash Media
http://www.linuxplanet.com/linuxplanet/tutorials/7208/1/ (What's The Fastest Linux Filesystem On Cheap Flash Media?; 10/26/10)

File Permission
http://www.zzee.com/solutions/linux-permissions.shtml

File Structures and Types
http://www.debianadmin.com/linux-directory-structure-overview.html (Linux Directory Structure Overview; 3/23/08)
http://en.wikipedia.org/wiki/Comparison_of_file_systems (Comparison of file systems) (Comparison of file systems; current)
http://omnitraining.net/free-articles/192-back-to-basics-unix-file-permissions (Back to Basics: Unix File Permissions; 2/17/10)
http://www.junauza.com/2009/03/important-linux-file-directories-that.html (Important Linux File Directories That Users Should Know About; 3/5/09)
http://www.nixtutor.com/linux/understanding-the-linux-directory-layout/ (Understanding the Linux Directory Layout; 2/5/09)
http://www.ibm.com/developerworks/linux/library/l-lpic1-v3-104-7/index.html (Learn Linux, 101: Find and place system files; 6/9/10)
http://www.ibm.com/developerworks/linux/library/l-lpic1-v3-104-2/index.html (Learn Linux, 101: Maintain the integrity of filesystems; 8/24/10)
http://www.linuxbsdos.com/2011/09/18/guide-to-disks-and-disk-partitions-in-linux/ (Guide to disks and disk partitions in Linux; 9/18/11)
http://www.howtogeek.com/117435/htg-explains-the-linux-directory-structure-explained/ (HTG Explains: The Linux Directory Structure Explained; 6/25/12)
http://www.tecmint.com/linux-directory-structure-and-important-files-paths-explained/ (Linux Directory Structure and Important Files Paths Explained; 9/16/13)
http://www.2daygeek.com/linux-directory-structure-file-system-hierarchy/# (Linux Directory Structure (File System Hierarchy) Explained with Examples; 10/6/16)

File Transfer Protocol
https://wiki.filezilla-project.org/Main_Page (FileZilla Wiki)

Flash
http://www.webupd8.org/2015/01/fresh-player-plugin-sees-new-release.html#more (Fresh Player Plugin Sees New Release (Pepper Flash Wrapper For Firefox); 1/14/15)

Fragmentaion
http://www.howtogeek.com/115229/htg-explains-why-linux-doesnt-need-defragmenting/ (HTG Explains: Why Linux Doesn’t Need Defragmenting; 5/30/12)

Graphics
http://www.gnuplot.info/docs/gnuplot.html (GNUplot - docs)
http://www.gnuplot.info/docs/gpcard.pdf (GNUplot - docs)
http://www.gnuplot.info/docs/gnuplot.html (GNUplot - docs)
http://www.duke.edu/~hpgavin/gnuplot.html (GNUplot - docs)
(videopodcast tutorial of GIMP)
http://gimp-savvy.com/BOOK/index.html (GIMP - docs)
http://www.nuclecu.unam.mx/~federico/gimp/links.html (GIMP - docs)
http://www.tech-edv.co.at/lunix/gimp.html (GIMP - docs)
http://carol.gimp.org/gimp2/basics/gimplite/ (GIMP - docs)
http://mylinuxbook.com/gimp-image-editor/ (GIMP - docs)
http://linux.suramya.com/tutorials/Install_GIMPShop/ (GIMPshop - docs)
http://www.gimptalk.com/ (GimpTalk: docs, forum, arts, etc) http://gimp-tutorials.net/ (gimp-tutorials.net: tutorial, forum, downloads)
http://www.gimpusers.com/news/2009-02-28/exceptional-plugin-photo-restore.html (Exceptional new plugin to restore faded transparencies/photos; 2/28/09)
http://www.linuxloop.com/2009/08/21/3-gimp-plugins-for-photographers/ (3 Gimp Plugins For Photographers; 8/21/09
http://ostatic.com/blog/free-tools-for-getting-started-with-the-mighty-gimp-graphics-editor (Free Tools for Getting Started with the Mighty GIMP Graphics Editor; 11/17/11)
http://www.unixmen.com/linux-tutorials/1583-30-great-tutorials-for-gimp (30 Great tutorials for GIMP; 2011)
http://ostatic.com/blog/free-tools-for-getting-started-with-the-mighty-gimp-graphics-editor (Free Tools for Getting Started with the Mighty GIMP Graphics Editor; 11/17/11)
http://ostatic.com/blog/gimp-guides-how-to-get-the-most-out-of-a-great-free-graphics-application (GIMP Guides: How to Get the Most Out of a Great, Free Graphics Application; 2/28/13)
http://gimpology.com/ (gimpology: HowTos)
http://puteraaladin.blogspot.com/ (alot of gIMP stuffs)
http://maketecheasier.com/getting-started-with-inkscape/2010/04/06 (Inkscape; 4/6/10)
http://www.packtpub.com/article/getting-started-with-inkscape (Inkscape tutorial)
http://www.unixmen.com/31-best-tutorials-of-inkscape-ii/ (31 Great Tutorial for Inkscape!)

Graphics card
http://www.linuxjournal.com/content/introduction-opengl-programming (An Introduction to OpenGL Programming; 11/12/14)

Kernel
http://www.ibm.com/developerworks/linux/library/l-linux-kernel/index.html (Anatomy of the Linux kernel; 06 June 2007)
http://www.howtogeek.com/howto/31632/what-is-the-linux-kernel-and-what-does-it-do/ (What is the Linux Kernel and What Does It Do?; 10/26/10)

Live CD/DVD/USB
http://www.linux-live.org/ (Linux Live)
http://www.livecdlist.com/wiki/index.php/LiveCD_Creation_Resources (LiveCD Creation Resources)
http://www.gooplusplus.com/multiboot-2013/ (YUMI-based Multiboot 2/4/8GB Instructions and Documentation)
http://www.gooplusplus.com/multiboot-2013-meteor/ (YUMI-based Multiboot 4GB METEOR Instructions and Documentation)
http://www.gooplusplus.com/multiboot-2013-mini/ (YUMI-based Multiboot 650MB MINI Instructions and Documentation)
https://bipedu.wordpress.com/2013/06/22/live-usb-linux-with-dd-command/ (live USB linux with dd command; 6/22/13) http://it.toolbox.com/blogs/enlightenment/howto-create-a-bootable-linux-media-using-the-dd-command-65907 (HOWTO: Create a bootable Linux Media using the dd Command; 3/9/15)

Mathematic
http://www.calculatorium.com/mathjax-quick-start-tutorial/ (MathJax Quick Start Tutorial; 8/19/13)

Memory
http://techthrob.com/2014/01/understanding-linux-memory-usage/ (Understanding Linux Memory Usage: Free, Cached, Buffered, and Hardware; 1/21/14)

Migration (from Window)
http://www.linux.com/learn/new-user-guides/25392-linux-migration-guide-finding-linux-equivalents-to-your-favorite-window (7/2/09; Linux Migration Guide: Finding Linux Equivalents to Your Favorite Windows Programs)

Music
http://tuxarena.blogspot.com/2009/04/review-moc-text-based-audio-player.html (Review: MOC, text-based audio player; 4/24/09)
http://polishlinux.org/apps/cli/moc-console-audio-player-for-linux/ (MOC — Console Audio Player for Linux; 5/15/07)
http://www.tuxarena.com/2014/03/moc-playing-music-in-the-terminal/ (MOC - Playing Music in the Terminal; 3/24/14)

Network
http://www.ghacks.net/2010/04/20/how-do-i-find-my-network-information-in-linux/ (How do I find my network information – in Linux? 4/20/10)
http://www.itworld.com/operating-systems/411332/unix-more-networking-basics-beginner (Unix: More networking basics for the beginner; 3/24/14)
http://www.linuxuser.co.uk/tutorials/wicd-tutorial (Wicd tutorial; 8/14)

Package Manager
http://how-to.linuxcareer.com/comparison-of-major-linux-package-management-systems (http://how-to.linuxcareer.com/comparison-of-major-linux-package-management-systems; 11/18/11)

PDA
http://www.linux.com/archive/feature/43399 (Synchronizing PalmOS devices with Linux; 3/17/05)
http://www.pilot-link.org/README.usb (Palm; pilot-link)
http://tldp.org/HOWTO/PalmOS-HOWTO/index.html (Palm OS Desktop HOWTO); 3/02)
https://help.ubuntu.com/community/PalmDeviceSetup (Palm ubuntu)
http://lists.jpilot.org/pipermail/jpilot/2009-January/007825.html (Palm; jpilot forum post)
http://www.tuxmobile.org/ (Linux With Laptops, Notebooks, PDAs and Mobile Cell Phones)
http://linuxwacom.sourceforge.net/ (The Linux Wacom Project)
http://www.informit.com/articles/article.asp?p=462523&rl=1
http://atulchitnis.net/writings/palm-ppp.php (TCP/IP over PPP between a PalmOS PDA and Linux)
http://www.askdavetaylor.com/how_can_i_connect_my_palm_treo_to_the_internet.html (How can I connect my Palm Treo to the Internet?)
http://howto.pilot-link.org/bluesync/ (Synchronize your PalmOS® Handheld over Bluetooth in Linux; 2/9/04)
http://kb.palm.com/wps/portal/kb/common/article/887_en.html (Palm Treo 700p reset HowTo)
https://wiki.ubuntu.com/CanadianTeam/Vancouver/PalmOS_Syncing_Under_Karmic (PalmOS Syncing Under Karmic; 12/12/10)

Phone
http://maketecheasier.com/videoconference-linux-and-windows-with-ekiga/2009/08/05 (How to Videoconference Linux and Windows with Ekiga)

Pinning
http://www.howtoforge.com/a-short-introduction-to-apt-pinning (A Short Introduction To Apt-Pinning)

Presentation
http://www.shallowsky.com/linux/LinuxPresentations.html
http://www.astro.umd.edu/~teuben/linux/lhttps://www.guru99.com/unix-linux-tutorial.htmlaptop-display.html

Printer
http://www.cups.org/ (CUPS used by most distributions)
http://cups.sourceforge.net/cups_install.html (Little HOWTO on installing CUPS on my system. [RPM])
https://www.openprinting.org/printers (LinuxFoundation: OpenPrinting)
http://localhost:631 (Control Center on local computer)
http://www.linux-magazine.com/issue/42/CUPS_Network_Printing.pdf
http://www.physik.uni-wuerzburg.de/%7Evrbehr/cups-pdf/(CUPS-PDF)
http://gimp-print.sourceforge.net/ (Gutenprint [formerly Gimp-Print])
http://hpinkjet.sourceforge.net/ (HP Linux and Image Printing)
http://hpoj.sourceforge.net/ (HP OfficeJet Linux driver)
http://solutions.brother.com/linux/en_us/index.html (Brother Linux Driver Homepage)
http://solutions.brother.com/linux/sol/printer/linux/cups_drivers.html (Brother CUPS driver and CUPS Wrapper driver download)
http://www.avasys.jp/english/linux_e/DL1_ink_e.html (EPSON; Download: Inkjet Printer)
ftp://download.canon.jp/pub/driver/bj/linux/ (Canon; drivers)
http://www.canon-europe.com/ (Canon Europe)
http://users.cybercity.dk/~dko12479/ (Lexmark Z700/P700/P3150https://www.guru99.com/unix-linux-tutorial.html linux printer driver)
http://goinglinux.com/articles/PrintToPDF.html (Add A PDF Printer)
http://www.dice.inf.ed.ac.uk/units/user_support/docs/cups-printing.html (Using lpr with CUPS)
http://www.linux.com/learn/tutorials/774476-how-to-manage-printers-in-linux (How to Manage Printers in Linux; 5/27/14)
http://www.linuxjournal.com/content/getting-started-3-d-printing-hardware (Getting Started with 3-D Printing: the Hardware ; 10/26/12)

Printer 3D
https://www.linux.com/news/hardware/peripherals/696285-open-source-and-linux-compatible-3d-printers/ (Guide to Open Source and Linux-Compatible 3D Printers, Part Two; 2/4/13)
http://www.linuxjournal.com/content/whats-new-3d-printing-part-i-introduction (What's New in 3D Printing, Part I: Introduction; 12/23/15)
http://www.linuxjournal.com/content/whats-new-3d-printing-part-ii-hardware (What's New in 3D Printing, Part II: the Hardware; 1/20/16)
http://www.linuxjournal.com/content/whats-new-3d-printing-part-iii-software (What's New in 3D Printing, Part III: the Software; 2/4/16)
http://www.linuxjournal.com/content/whats-new-3d-printing-part-iv-octoprint (What's New in 3D Printing, Part IV: OctoPrint; 2/24/16)

Privacy
(moved to privacy tools in section "Others")
Publishing
http://www.linuxjournal.com/article/7054 (non-commercial; Sribus HowTo)

QR code
http://www.linuxandubuntu.com/home/how-to-create-qr-codes-in-linux (How to Create QR Codes In Ubuntu/Linux Mint; 2/221/15)

RPM
http://bobcares.com/article45.html (RPM instructions)
http://www.rpm.org/max-rpm/ (Maximum RPM; 2000)
http://www.tecmint.com/20-practical-examples-of-rpm-commands-in-linux/ (20 Practical Examples of RPM Commands in Linux; 4/10/13)
https://www.howtoforge.com/tutorial/how-to-convert-packages-between-deb-and-rpm/ (How to convert packages between .deb and .rpm; 12/15)

RPM (building)
http://genetikayos.com/code/repos/rpm-tutorial/trunk/rpm-tutorial.html (RPM Tutorial)
http://www.rpm.org/max-rpm/ (Maximum RPM; 2000)

RPM (configuration)
http://linuxconfig.org/list-of-rpm-configuration-files

Security
(see email and HTTPS for security on email and websites) http://maketecheasier.com/remove-windows-viruses-with-linux/2010/02/02?utm_source=feedburner (How to Remove Windows Viruses with Linux; 2/2/10)
http://thelinuxworks.blogspot.com/2015/10/pcworld-recently-published-article.html (Linux Security: Lock Down a New System Immediately; 10/7/16)
http://www.dpo.uab.edu/~andrewb/snort/snortdoc/snort.html (non-commercial; Snort docs)
http://www.jpsdomain.org/infosec/snort.html (non-commercial; Snort docs)
http://neworder.box.sk/newsread.php?newsid=7646 (non-commercial; Snort tutorial)
http://www.auslogics.com/en/blog/2009/05/top-5-firefox-security-add-ons/ (Top 5 Firefox Security Add-ons)
http://itmanagement.earthweb.com/secu/article.php/3850796/51-Open-Source-Tools-to-Protect-Your-Identity.htm (51 Open Source Tools to Protect Your Identity; 12/3/09)
http://www.zdnet.com/blog/btl/five-tips-for-improving-linux-security/35798?tag=content;search-results-rivers/ (Five tips for improving Linux security; 6/15/10)
http://www.unixmen.com/linux-tutorials/1623-9-best-practices-to-secure-your-linux-desktop-and-server (9 Best practices to secure your Linux Desktop & Server | Including installation & Configuration; 4/8/11)
http://www.itworld.com/security/397733/how-block-traffic-other-countries-linux (How to block traffic from other countries in linux; 12/27/13)

Server
http://www.reallylinux.com/docs/admin.shtml (Linux Commands for Beginning Server Administrators)
https://httpd.apache.org/docs/current/ (Apache)

Server Analysis
https://www.devonwebdesigners.com/2567/awstats-vs-webalizer-vs-google-analytics/

Speech Recognition
http://cmusphinx.sourceforge.net/wiki/ (Sphinx official wiki)
http://sphinx.subwiki.com/sphinx/index.php/Main_Page (Sphinx unofficial wiki)

Sound/Audio
http://www.maximumpc.com/audacity_crash_course_2014 (Audacity Crash Course; 8/19/14)

System Cleaning
http://freedompenguin.com/articles/how-to/keeping-linux-clean/ (Keeping Linux Clean; 11/2/16)

System Monitor
http://conky.linux-hardcore.com/ (conky)

TextEditor (see vi & emacs also)
http://www.howtogeek.com/howto/42980/the-beginners-guide-to-nano-the-linux-command-line-text-editor/
http://linuxaria.com/article/gedit-an-easy-to-use-text-editor-with-many-advanced-features?lang=en (gEdit, an easy to use text editor with many advanced features)

Torrent
http://www.everydaylinuxuser.com/2014/05/a-beginners-guide-to-bittorrent-and.html (A beginners guide to bittorrent and the KTorrent client software; 5/9/14)

Troubleshooting
http://www.nextstep4it.com/magazines/nseditions/2013/Dec13_Edition/linux.php (12 Most Common Linux TroubleShooting Scenarios; 12/13)

USB Iso (create & boot)
http://pcsupport.about.com/od/tipstricks/ht/bootusbflash.htm (How To Boot From a USB Device (Flash Drive or External Hard Drive))
http://www.linuxjournal.com/content/linux-fingernail (Linux on a Fingernail)
http://ostatic.com/blog/putting-linux-muscle-in-your-pocket-resources-for-usb-thumb-drives (Putting Linux Muscle in Your Pocket: Resources for USB Thumb Drives; 1/16/09)
http://tuxtweaks.com/2014/03/create-linux-mint-persistent-live-usb/ (How To Create a Linux Mint Persistent Live USB; 3/27/14)
http://www.ubuntubuzz.com/2015/04/create-multiboot-os-usb-with-multisystem-in-linux.html (Create Multiboot OS USB with Multisystem in Linux; 4/15)

Video
http://www.makeuseof.com/tag/current-state-video-streaming-services-linux/ (The Current State of Video Streaming Services on Linux; 11/5/16)
https://support.mozilla.org/en-US/products/firefox/chat-and-share/firefox-hello-webrtc (Firefox Hello)
https://webrtc.org/ (WebRTC; Real-Time Communications (RTC) capabilities via simple APIs)

Web Publishing
http://tuxradar.com/content/drupal-get-started-easy-way (Drupal: Get started the easy way; 11/27/09)

Window Emulator/Simulator/Virtualization
http://www.linuxforums.org/forum/wine/ (WINE' forum)
http://wine-review.blogspot.com/2007/12/quick-introduction-to-wine.html (A quick introduction to Wine)
http://www.frankscorner.org/ (WINE; Frank's Corner)
http://daniel.saunders.googlepages.com/howto.html#UseESwordOnLinux. (WINE; esword)
https://launchpad.net/~ubuntu-wine/+archive/ppa (PPA for Ubuntu Wine Team )
http://wiki.jswindle.com/index.php/Wine_InstallShield (WINE: InstalklShield)
http://qemu-forum.ipi.fi/ (QEMU forum)
http://communities.vmware.com/index.jspa (VMWare forum)

Window Manager (not Desktop Environment)
http://urukrama.wordpress.com/openbox-guide/ (Openbox guide)
http://icculus.org/openbox/index.php/Main_Page (openbox doc)
http://maketecheasier.com/beginners-guide-to-fluxbox-configuration/2010/01/19 (Beginner’s Guide to Fluxbox Configuration; 1/19/10)
http://fluxbox-wiki.org/ (fluxbox wiki)
http://www.linux.com/learn/tutorials/467792-creating-the-perfect-fluxbox-desktop-on-linux (Creating the Perfect Fluxbox Desktop on Linux; 7/12/11)
http://www.techrepublic.com/blog/opensource/four-great-pipe-menus-for-openbox/2720?tag=content;siu-container (Four great pipe menus for Openbox; 7/25/11)
http://www.freesoftwaremagazine.com/articles/powering_fluxbox_menus_fluxbox_editor (http://www.freesoftwaremagazine.com/articles/powering_fluxbox_menus_fluxbox_editor; 8/24/12)

Wireless Softwares
http://www.linuxquestions.org/linux/answers/Networking/NdisWrapper_The_Ultimate_Guide/ (Ndiswrapper)
http://www.thinkwiki.org/wiki/Madwifi (MadWifi)

Word Processor
https://www.libreoffice.org/get-help/documentation/ (LibreOffice Documentation)
http://wiki.services.openoffice.org/wiki/Main_Page (OpenOffice wiki)
http://oooauthors.org/groups/authors/userguide/migrationguide/ (OpenOffice migration)
http://www.taming-openoffice-org.com/ (Taming OpenOffice.org)
http://www.8daysaweek.co.uk/ (OpenOffice.org directory)
http://www.bytebot.net/openoffice/faq.html (The OpenOffice.org Unofficial FAQ; 2003)
http://web.ukonline.co.uk/mripley/toolbox.html (OpenOffice.org API & BASIC formats)
http://openoffice.start4all.com/ (OpenOffice directory)
http://wiki.services.openoffice.org/wiki/Main_Page (OpenOffice.org wiki)
http://www.lockergnome.com/nexus/linux/2007/08/15/open-office-making-it-start-faster/ (Open Office - Making It Start Faster!)
http://linuxbeacon.com/doku.php/articles:writertips (Getting the most out of OpenOffice.org Writer)
http://www.ooodocs.org/ (ooodocs.org; commercial support)
http://www.getopenoffice.org/main.html (Get Open Office; commercial support)
http://www.digitaldistribution.com/ (eLearning for OpenOffice.org; commercial support)
http://www.open-of-course.org/index.php (OpenOffice.org and Scribus tutorial)
http://www.linuxjournal.com/content/pdf-export-openofficeorg (PDF Export in OpenOffice.org; 4/13/10)
http://www.tuxmagazine.com/node/1000225 (Scribus tutorial)
http://portal.unesco.org/culture/en/ev.php-URL_ID=26193&URL_DO=DO_PRINTPAGE&URL_SECTION=201.html (Get Started With Scribus)
http://decafbad.net/projects/scribus-tutorial (Scribus Tutorial)
http://www.linuxuser.co.uk/features/getting-started-with-scribus/ (Getting started with Scribus; 1/12/10)
http://linuxmafia.com/wpfaq/ (WordPerfect on Linux FAQ)
http://docbook.sourceforge.net/ (non-commercial; specs for XML?)

Workspace
http://www.datamation.com/open-source/linux-virtual-workspaces-how-do-they-differ.html (Linux Virtual Workspaces--How Do They Differ?; 6/11/13)

Softwares

General
http://www.seopher.com/articles/the_70_coolest_free_applications_in_existence (The 70 coolest free applications in existence)
http://www.linuxjournal.com/content/silly-programs (Silly Programs; 6/19/11)
http://www.datamation.com/open-source/67-open-source-replacements-for-really-expensive-applications-1.html (67 Open Source Replacements for Really Expensive Applications; 8/16/11)
http://www.datamation.com/open-source/60-open-source-tools-for-protecting-your-privacy-1.html (60 Open Source Tools for Protecting Your Privacy; 8/22/11)
http://pcquest.ciol.com/content/topstories/2012/112113008.asp (40+ Open Source and Free Software; 11/30/12)
http://www.cyberciti.biz/open-source/best-terminal-applications-for-linux-unix-macosx/ (15 Greatest Open Source Terminal Applications Of 2012; 1/7/13)
http://www.datamation.com/applications/the-ultimate-guide-to-open-source-software-1.html (The Ultimate Guide to Open Source Software; 12/17/13)
http://www.datamation.com/open-source/50-open-source-replacements-for-windows-xp-1.html (50 Open Source Replacements for Windows XP; 4/16/14)

Accounting
http://www.gnucash.org/ (non-commercial; GNUCash - double accounting)
http://kmymoney2.sourceforge.net/ (non-commercial; KMyMoney)
http://www.sql-ledger.org (non-commercial; SQL ledger - double accounting)
http://www.ledgersmb.org/ (non-commercial; LedgerSMB)
http://jgnash.sourceforge.net/wiki/index.php/Main_Page (non-commercial; jGnash)
http://gnofin.sourceforge.net/ (non-commercial; Gnofin)
http://www.grisbi.org/ (non-commercial; Grisbi)
http://arias.sourceforge.net/ (non-commercial; ARIA)
http://www.starnix.com/banal/ (non-commercial; BANAL; bookkeeping)
http://buddi.digitalcave.ca/ (non-commercial; Buddi)
http://homebank.free.fr/ (non-commercial; Homebank)
http://mjrz.net/ (non-commercial; Mjrz)
http://www.codelathe.com/mmex/ (non-commercial; Money Manager Ex)
http://vps.arachnoid.com/PLCash/index.html (non-commercial; PLCash)
http://adempiere.org/home/main (non-commercial; ADempiere)
http://www.jquantlib.org/index.php/Main_Page (non-commercial; JQuantLib)
http://www.ifreebudget.com/ (non-commercial; iFreeBudget)
https://github.com/mrooney/wxbanker (non-commercial; wxbanker)
http://www.icewalkers.com/Linux/Software/518870/CheckBook-Tracker.html (non-commercial; Checkbook Tracking - single accounting; 2003)
http://www.compiere.com/ (commercial but free trial and/or free community edition; Compiere)
http://www.moneydance.com (commercial; Moneydance)
http://www.linuxcanada.com (commerical; Quasar)
http://oe.quickbooks.com/ (commercial; QuickBooks Online)
http://www.jaya123.com/ (commerical; JAYA123; small business)
http://www.linuxledgers.com/ (commercial; Linux General Ledger)
http://blogs.techrepublic.com.com/10things/?p=372 (Top 10 Linux financial tools)
http://www.aaxnet.com/design/linuxacct.html (various links)
http://www.datamation.com/open-source/63-open-source-replacements-for-popular-financial-software-1.html (63 Open Source Replacements for Popular Financial Software; 7/11/11)

Alarms
http://www.linuxlinks.com/Software/ProductivityTools/Timers/ (list)

Anti-Virus/Adware/Worms
http://www.clamav.net/ (non-commerical; Clam AntiVirus)
http://kde-apps.org/content/show.php?content=14549 (non-commercial; kbitdefender)
http://www.grisoft.com/us/us_index.php (commerical; AVG Anti-Virus)
http://www.bitdefender.com/ -> linux (commercial; bitdefender
http://www.f-prot.com/ (commerical; F-Prot Antivirus)
http://www.hbedv.com (commerical; AntiVir)
http://www.ravantivirus.com/ (commerical; RAV Antivirus)
http://www.avast.com/ (commerical; avast!)
http://www.norman.com/ (commerical; Norman)
http://www.pandasoftware.com/ (commerical; Panda)
http://www.astaro.com/# (commercial; Astaro's products)

Applications
http://portableapps.com (non-commercial; Portable App)

Archiver Utility
http://www.peazip.org/ (non-commercial; PeaZip)

Astromony
http://www.shatters.net/celestia/ (non-commercial; Celestia)
http://www.stellarium.org/ (non-commercial; Stellarium)

AntiVirus
http://www.linux.org/threads/malware-and-antivirus-systems-for-linux.4455/ (Malware and Antivirus Systems for Linux; 8/19/13)

Backups
http://www.rsnapshot.org (non-commercial; rsnapshot)
http://www.partimage.org/ (non-commercial; Partition Image)
http://cdtar.sourceforge.net/ (non-commercial; cdtar)
http://konserve.sourceforge.net/ (non-commercial; Konserve)
http://www.feyrer.de/g4u/ (non-commercial; g4u)
http://dar.linux.free.fr/ (non-commercial; DAR)
http://www.amanda.org/ (non-commercial; AMANDA)
http://mkcdrec.ota.be/project/index.html (non-commercial; mkCDrec)
http://www.dirvish.org/ (non-commercial: DIRVISH)
http://sbackup.sourceforge.net/HomePage (non-commercial; SBackup)
http://backuppc.sourceforge.net/ (non-commercial; BackupPC)
http://www.sysresccd.org/ (non-commercial; SystemRescueCd)
http://www.nongnu.org/rdiff-backup/ (non-commercial; rdiff-backup)
http://www.bacula.org/en/ (non-commercial: Bacula)
http://kbackup.sourceforge.net/ (non-commercial: KBackup)
http://backintime.le-web.org/ (non-commercial: Back In Time)
http://www.fsarchiver.org/Main_Page (non-commercial: FSArchiver)
http://luckybackup.sourceforge.net/ (non-commercial: luckyBackup)
http://www.opbyte.it/grsync/ (non-commercial: Grsync)
http://www.mondorescue.org/ (non-commercial: Mondo Rescue)
https://spideroak.com/ (non-commercial; SpiderOak; online backup; includes sync and sharing)
http://www.crashplan.com/consumer/crashplan.html (commercial; free software, but paid storage; CrashPlan)
http://www.arkeia.com/ (commercial; Arkeia)
http://www.veritas.com/ (commercial; VERITAS )
http://www.thekompany.com/products/tkbackup/ (commercial: tkBackup)
http://www.acronis.com/ (commercial; Acronis)
http://visualversion.com/backupsw/index.html (commercial; BackupSW)
http://www.linuxlinks.com/Web/Utilities/Backup/index.shtml (various utilities)
http://www.linux.org/apps/all/Administration/Backup.html (various utilities)
http://blogs.techrepublic.com.com/10things/?p=895 (10 outstanding Linux backup utilities; list; 7/21/09)
http://www.datamation.com/open-source/60-os-replacements-for-storage-software-1.html (60 OS Replacements for Storage Software; software list include compression, database, data recovery, etc; October 15, 2012)
http://www.cyberciti.biz/open-source/awesome-backup-software-for-linux-unix-osx-windows-systems/ (5 Awesome Open Source Backup Software For Linux and Unix-like Systems; 11/6/15)

Bandwidth Monitoring Tools
http://www.ubuntugeek.com/bandwidth-monitoring-tools-for-linux.html (various utilities)

Battery
http://www.lesswatts.org/projects/powertop/ (non-commercial; Powertop)

Bible
http://www.bibletime.info/ (non-commercial; Bibletime)
http://xiphos.org/ (non-commercial; Xiphos [was GNOMESword)
http://www.kiyut.com/products/alkitab/index.html (non-commercial; Alkitab Bible Study)
http://www.bibleanalyzer.com/ (non-commercial; Bible Analyzer)
http://bpbible.com/ (non-commercial; BPBible)

Blog
http://www.s9y.org/ (non-commercial; Serendipity)
http://wordpress.com/ (non-commercial; WordPress w/ user website)
http://wordpress.org/ (non-commercial; WordPress w/o user website)
http://lifetype.net/ (non-commercial; LifeType)
http://gwibber.com/ (non-commercial; Gwibber)
http://dotclear.org/ (non-commercial; Dotclear)
http://choqok.gnufolks.org/ (non-commercial; Choqok; uses KDE)
https://github.com/jgoerzen/twidge/wiki (non-commercial; Twidge; for programming)
http://www.movabletype.com/ (commercial, but free basic; Movable Type)

Bluetooth
https://github.com/blueman-project/blueman (non-commercial; blueman)

Boot Manager
http://www.plop.at/en/bootmanager.html (non-commercial; Plop Boot Manager; free for non-commercial use)

BootLoader
http://www.gnu.org/software/grub/ (non-commercial; Grub)

Browsers
http://www.mozilla.com/en-US/firefox/ (non-commercial; firefox)
http://getfirebug.com/ (non-commercial; firebug = firefox add-on)
http://www.technewsworld.com/story/All-Things-Appy-5-Best-Firefox-Tools-for-Shopping-Online-79212.html (All Things Appy: 5 Best Firefox Tools for Shopping Online; 10/18)
http://www.computerworld.com/article/2692560/six-browser-plug-ins-that-protect-your-privacy.html (Six browser plug-ins that protect your privacy; 10/18/14)
http://www.mozilla.org/projects/seamonkey/ (non-commercial; SeaMonkey)
http://getswiftfox.com/index.htm (non-commercial; Swiftfox; firefox optimized)
http://www.geticeweasel.org/ (non-commercial; Iceweasel; debian's firefox)
http://plugindoc.mozdev.org/ (non-commercial; firefox & mozilla plugins)
http://www.gnu.org/software/gnuzilla/ (non-commercial; GNUzilla; GNU mozilla)
http://adblock.mozdev.org (non-commercial; AdblocK [Mozilla and Firebird])
http://www.techdrivein.com/2010/11/top-10-firefox-add-ons-to-make-browsing.html (Top 10 Firefox Add-ons to Make Browsing Safe, Secure and Private Once Again; 11/15/10)
http://www.itworld.com/internet/134160/best-firefox-extensions-organize-your-way-better-firefox (Best Firefox extensions: Organize your way to a better Firefox; 1/24/11)
http://wiki.mozilla.org/WebRunner (non-commercial; Prism [works with firefox])
http://www.palemoon.org/ (non-commercial; Pale Moon; firefox w/o Australis)
http://www.konqueror.org/ (non-commercial; konqueror; KDE)
https://wiki.gnome.org/Apps/Web (non-commercial; Epiphany)
http://midori-browser.org/ (non-commercial; Midori)
https://vivaldi.com/ (non-commercial; Vivaldi)
http://galeon.sourceforge.net (non-commercial; galeon; GNOME)
http://www.dillo.org/ (non-commercial; dillo)
http://en.wikipedia.org/wiki/Lynx_(web_browser) (non-commercial; Lynx [text browser])
http://links.sourceforge.net/ (non-commercial; WWW Text Browser)
http://www.w3.org/Amaya/ (non-commercial; Amaya)
http://www.netsurf-browser.org/ (non-commercial; NetSurf)
http://www.tatanka.com.br/ies4linux/page/Main_Page(non-commercial; IEs4linux)
http://www.netsurf-browser.org/ (non-commercial; NetSurf)
http://www.srware.net/en/software_srware_iron.php (commercial but open source; Iron [based on Chromiun, but w/ privacy)
http://www.chromium.org/ (non-commercial; Chromium)
http://www.qupzilla.com/ (non-commercial; QupZilla)
http://www.getmantra.com/ (non-commercial; Mantra)
http://portix.bitbucket.org/dwb/ (non-commercial; dwb)
http://www.slimjet.com/en/ (non-commercial; Slimjet)
https://www.brave.com/(non-commercial; privacy; in alpha as of 10/17; Brave)
http://www.google.com/chrome/intl/en/more/index.html (non-commercial, but produced by Google; Chrome)
http://www.opera.com/ (commercial, but free basic; Opera)

CAD/Rendering/Graphics
http://www.blender3d.org/ (non-commercial; Blender)
http://www.inkscape.org/ (non-commercial; Inkscape)
http://www.wings3d.com/ (non-commercial; Wings 3D)
http://www.povray.org/ (non-commercial; POV-Ray)
http://www.sodipodi.com/index.php3 (non-commercial; Sodipodi)
http://lx-viewer.sourceforge.net/ (non-commercial; LX-Viewer)
http://brlcad.org/ (non-commercial; BRL-CAD)
http://sagcad.sourceforge.jp/ (non-commercial; SagCAD)
http://archimedes.incubadora.fapesp.br/portal (non-commercial; archimdes)
http://www.misfitcode.com/misfitmodel3d/ (non-commercial; Misfit Model 3D)
http://www.opencascade.org/ (non-commercial; Open CASCADE)
http://sourceforge.net/projects/free-cad/ (non-commercial; FreeCAD)
http://varkon.sourceforge.net/ (non-commercial; VARKON)
http://www.k-3d.org/wiki/Main_Page (non-commercial; K-3D)
http://www.artofillusion.org/ (non-commercial; Art of Illusion)
http://argouml.tigris.org/ (non-commercial; ArgoUML)
http://www.gnu.org/software/electric/ (non-commercial; Electric; electric CAD)
http://ayam.sourceforge.net/ayam.html (non-commercial; Ayam)
http://librecad.org/cms/home.html (non-commercial; LibreCAD)
http://www.3ds.com/products/draftsight/free-cad-software (commercial service, free program; DraftSight)
http://www.qcad.org/ (commercial; QCad)
http://www.ribbonsoft.com/camexpert.html (commercial; CAM Expert = CAM extension of QCad)
http://www.varicad.com/ (commercial; VariCAD)
http://www.bricscad.com/ (commercial; BricsCad)
http://www.cadsoft.de/ (commercial; CadSoft)
http://www.graebert.com/en/cad/ares/99 (commercial; ARES)
http://www.freecad.com/dcd/CAD_Programs____xNIX/ (list of CAD programs)
http://www.tech-edv.co.at/lunix/CADlinks.html (list of CAD programs)

Calculator
http://speedcrunch.org/en_US/index.html (non-commercial; SpeedCrunch)
http://qalculate.sourceforge.net/ (non-commercial; Qalculate)
http://extcalc-linux.sourceforge.net/features.html (non-commercial; Extcalc)
http://www.jirka.org/genius.html (non-commercial; Genius)
http://utils.kde.org/projects/kcalc/ (non-commercial; KCalc; part of KDE)

Calendar
http://www.mozilla.org/projects/calendar/lighting/ (non-commercial; lighting)
http://www.mozilla.org/projects/calendar/sunbird/ (non-commercial; sunbird)
http://www.brownbearsw.com/calcium/ (commercial; Calcium)
http://www.rainlendar.net/cms/index.php (commercial; Rainlendar)

Camera/Webcam (see also photo)
http://projects.gnome.org/cheese/ (non-commercial; Cheese)
http://guvcview.sourceforge.net/ (non-commercial; Guvcview)
http://www.zoneminder.com/ (non-commercial; ZoneMinder; surveillence)
http://www.inference.phy.cam.ac.uk/opengazer/ (non-commercial; Opengazer)
http://www.inference.phy.cam.ac.uk/dasher/ (non-commercial; Dasher; motion text-editing)
http://live.gnome.org/MouseTrap (non-commercial; MouseTrap; motion GNOME controls)
http://code.google.com/p/gpicsync/ (commercial, but free; gpicsync; GPS)

Car Navigation
http://roadmap.sourceforge.net/ (non-commercial; RoadMap)

CD/DVD Burner
http://www.k3b.org/ (non-commercial; K3b)
http://www.xfce.org/projects/xfburn/ (non-commercial; xfburn)
http://projects.gnome.org/brasero/ (non-commercial; Brasero)
http://www.xcdroast.org/ (non-commercial; X-CD-Roast)
http://gnomebaker.sourceforge.net/ (non-commercial; GnomeBaker)
http://sourceforge.net/projects/kreatecd/ (non-commercial; KreateCD)
http://cdbakeoven.sourceforge.net/ (non-commercial; CD Bake Oven)
http://arson.sourceforge.net/ (non-commercial; Arson)
http://bashburn.sourceforge.net/ (non-commercial: BashBurn (console))
http://simpleburn.tuxfamily.org/ (non-commercial; SimpleBurn)
http://cdrdao.sourceforge.net/ (non-commercial; Cdrdao)
http://www.littlesvr.ca/isomaster/ (linux - free, window - pay; ISO Master)
http://www.acetoneteam.org/ (non-commercial; AcetoneISO)

Cellphone (see PDA also)
http://www.bitpim.org/ (non-commercial; BitPim)

Childern's Softwares
http://edu.kde.org/ (list)
http://www.filegate.net/linux4kids/ (non-commercial; Linux4kids: Educational Linux Software)
http://sourceforge.net/projects/linuxkidx/ (non-commercial; LinuxKidX)
http://tux4kids.alioth.debian.org/ (non-commercial; Tux4Kids [TuxMath, TuxPaint, TuxTyping])
http://www.squeakland.org/ (non-commercial; Etoys)
http://gcompris.net/-en- (non-commercial; GCompris)

Cloud (private)
http://owncloud.org/ (non-commercial; ownCloud)
http://wiki.debian.org/FreedomBox (non-commercial; FreedomBox)
http://openstack.org/ (non-commercial; OpenStack)
http://www.skylable.com/ (non-commercial; Skylable [commercial support]; private data cloud)
http://per-cloud.com/doku.php (non-commercial; percloud; [privacy, still in pre-alpha as of 10/13])
http://owncloud.org/ (commercial; ownCloud; free program, but commercial support)
http://www.eucalyptus.com/ (commercial; Eucalyptus)
http://www.getdropbox.com/ (DropBox)
https://pydio.com/ (commercial; pydio)
https://about.mattermost.com/ (commercial; open source, private cloud; Mattermost)
https://rocket.chat/ (commercial; open source; Rocket.Chat)
https://www.fossmint.com/dropbox-alternatives-for-linux/ (The 9 Best Free Dropbox Alternatives for Linux; 3/17)

Cloud (public)
http://www.xenproject.org/ (Xen; security)

Code Editor
https://bespin.mozilla.com/ (???; Bespin; web-based)

Collaboration and Integration Server (browser+email+calendar+etc)
http://www.open-xchange.com/ (non-commercial; Open-Xchange)
http://www.cynapse.com/cynin (commercial but free community edition; Cyn.in)
http://www.cynapse.com/syncnotes (commercial; SyncNotes)

Concurrent Versions System (CVS)
http://www.horde.org/projects.php (non-commercial; Horde)

Content Management System (CMS)
http://drupal.org/ (non-commercial; Drupal)
http://www.textpattern.com/ (non-commercial; Textpattern)
http://plone.org/ (non-commercial; Plone)
http://www.tryton.org/en/ (non-commercial; Tryton)
http://www.cmsobserver.com/best-free-shopping-carts/ (Best Free Shopping Carts; 10/22/13)

Cookbook/Recipe
http://grecipe-manager.sourceforge.net/ (non-commercial; Gourmet Recipe Manager)
http://phprecipebook.sourceforge.net/index.php (non-commercial; PHPRecipeBook)
http://krecipes.sourceforge.net/ (non-commercial; Krecipes)

Cloud
https://owncloud.org/ (non-commercial; ownCloud)
(non-commercial; Cryptomator; client-side encryption)
http://www.linuxbsdos.com/2013/08/17/4-host-proof-or-prism-proof-cloud-storage-services/ (4 host-proof or PRISM-proof Cloud storage services; 8/17/13)

Collaboration
https://wire.com/ (non-commercial; Wire)

Crossword
http://www.freedownloadscenter.com/Best/linux-crossword.html (list)
http://crossword.sourceforge.net/ (non-commercial; crossword)

Customer Relationship Management (CRM)
http://xrms.sourceforge.net/pagebuilder.php?s1=18 (non-commercial; XRMS)
http://www.sugarcrm.com/ (commercial support; open source; SugarCRM)
http://www.vtiger.com/ (commercial; vtiger)
http://www.salesforce.com/ (commercial; Salesforce.com)
http://www.netsuite.co.uk/portal/uk/products/main.shtml (commercial; NetSuite)
http://www.freecrm.com/index.html (commercial; free basic edition; Free CRM)

Data Recovery
http://www.sysresccd.org/ (non-commercial; SystemRescueCd)
http://www.mondorescue.org/ (non-commercial; Mondo)
http://www.cgsecurity.org/wiki/TestDisk (non-commercial; TestDisk)
http://www.cgsecurity.org/wiki/PhotoRec (non-commercial; PhotoRec)
https://grc.com/ (commercial; SpinRite)
http://www.blackmoreops.com/2014/11/28/data-recovery-software-data-rescue-tools/ (14 top data recovery softwares; 11/28/14)

Database
http://www.pgaccess.org/ (non-commercial; PgAccess)
http://www.knoda.org/ (non-commercial; knoda)
http://www.tamos.net/sw/dbMetrix/ (non-commercial; dbMetrix)
http://www.mysql.com/ (commercial, but open source license)
http://www.thekompany.com/projects/rekall/ (commercial, but open source license; Rekall)
http://www.navicat.com/ (commercial w/ free trial; Navicat)
http://www.omnis.net/ (commercial; Omnis Studio & Omnis Web Client)

Desktop (web-based)
http://desktoptwo.com/ (commercial, but free; Desktoptwo)
http://eyeos.org/ (non-commercial; eyeOS)

Desktop computing and communications platform (security)
https://subgraph.com/index.en.html (non-commercial; Subgraph OS)

Desktop Environment (more than a window manager)
http://www.kde.org/ (non-commercial; KDE)
http://www.gnome.org/ (non-commercial; GNOME)
http://www.xfce.org/ (non-commercial; XFCE)
http://lxde.org/ (non-commercial; LXDE)
http://mate-desktop.org/ (non-commercial; MATE)
http://equinox-project.org/ (non-commercial; Equinox)
http://roscidus.com/desktop/ (non-commercial; Roxc)
http://xwinman.org/otherdesktops.php (list)
http://www.nongnu.org/antiright/ (non-commercial; AntiRight)
http://goodies.xfce.org/projects/panel-plugins/xfce4-mailwatch-plugin (non-commercial; XFCE Plugin: Mailwatch)

Destruction
http://dban.sourceforge.net/ (non-commercial; DBAN)
http://wipe.sourceforge.net/ (non-commercial; Wipe)
http://linoxide.com/security/delete-files-permanatly-linux (4 Tools to Securely Delete Files from Linux; 3/24/15)

Development
http://status.net/ (non-commercial; StatusNet)

Diabetes
http://www.healthengage.com/healthengagediabetes.html (commercial w/ free trial; HealthEngage)

Diagnostic
http://linux-diag.sourceforge.net/ (non-commercial; Linux Diagnostic Tools)
http://www.pc-doctor.com/ (commercial; PC-Doctor)

Dictionary
http://jalingo.sourceforge.net/ (non-commercial; JaLingo)
http://sdict.com/en/ (non-commercial; Sdictionary)
http://stardict.sourceforge.net/ (non-commercial; StarDict)
http://xdxf.revdanica.com/ (non-commercial; XDXF; file conversion)
http://www.linuxandlife.com/2011/10/dictionary-applications-for-linux.html (Qstardict and GoldenDict - Two great offline dictionary applications for Linux; 10/21/11)

Diet
http://freshmeat.net/projects/nut/ (non-commercial; NUT)
http://www.lafn.org/~av832/ (non-commercial; NUT docs)
http://freshmeat.net/projects/dmak/ (non-commercial; Diet Monger)

Directory Content Manager
http://git.or.cz/ (non-commercial; git)

Disk Imaging and Cloning
http://clonezilla.org/ (non-commercial; Clonezilla)

Disk Usage
http://kgraphspace.sourceforge.net/ (non-commercial; KGraphSpace)

Document Management
http://www.sqldesktop.com/dlpage.htm (commercial; free basic; sqlDESKTOP)

Download
(non-commercial; uGet)
https://www.kde.org/applications/internet/kget/ (non-commercial; KGet)
(non-commercial; Steadyflow)
http://prozilla.genesys.ro/ (non-commercial; ProZilla & ProzGUI)

eBook Reader
http://calibre-ebook.com/ (non-commercial; calibre)
http://www.fbreader.org/ (non-commercial; FBReader)
http://lucidor.org/lucidor/ (non-commercial; Lucidor)
http://lucidor.org/lucifox/ (non-commercial; Lucifox; firefox add-on)
https://okular.kde.org/ (non-commercial; Okular; KDE)
https://github.com/sakisds/pPub (non-commercial; pPub)
http://crengine.sourceforge.net/ (non-commercial; Cool Reader)
https://github.com/user-none/Sigil (non-commercial; Sigil)
http://www.ulduzsoft.com/linux/kchmviewer/ (non-commercial; Kchmviewer)
https://addons.mozilla.org/en-US/firefox/addon/epubreader/ (EPUBReader; Firefox add-on)

Education
http://edu.kde.org/marble/ (non-commercial; Marble; KDE World Altas)
http://resources.zdnet.co.uk/articles/comment/0,1000002985,39700497,00.htm (Ten Linux apps that get top marks from schools)

Ecommerce
http://www.nopdesign.com/freecart/ (non-commercial; NOP's Free Shopping Cart; use jaascript)
http://www.oscommerce.com/ (non-commercial; osCommerce)
http://commerce-cgi.com/ (non-commercial; Commerce.CGI; paid support)
http://www.zen-cart.com/ (free software Zen Cart; commercial support)
http://www.agoracart.com/ (free software AgoraCart; commercial support)
http://www.cubecart.com/ (commaudioercial w/ free trial; CubeCart)

Email (see also groupware)
http://www.mozilla.com/en-US/thunderbird/ (non-commercial; thunderbird)
http://globs.org/articles.php?lng=en&pg=9 (non-commecial; yamb - thunderbird extension)
http://www.mozilla.org/projects/seamonkey/ (non-commercial; SeaMonkey [continuation of mozilla])
http://www.gnome.org/projects/evolution/ (non-commercial; evolution)
http://kmail.kde.org/ (non-commercial; kmail)
http://www.claws-mail.org/ (non-commercial; Claws Mail)
http://www.mutt.org/ (non-commercial; Mutt)
http://www.washington.edu/alpine/ (non-commercial; Alpine)
http://sylpheed.sraoss.jp/en/ (non-commercial; Sylpheed)
http://www.instinct.org/elm/ (non-commercial; Elm [unix])
http://www.uic.edu/depts/accc/software/pine/index.html (non-commercial; Pine [unix])
http://www.roundcube.net/ (non-commercial; RoundCube; webmail)
http://popfile.sourceforge.net/cgi-bin/wiki.pl (non-commercial; POPFile)
http://www.spicebird.com/ (non-commercial; Spicebird)
http://squirrelmail.org/ (non-commercial; SquirrelMail)
http://sourceforge.net/projects/bitmail/ (non-commercial; Cassiopeia's BitMail)
https://pawsa.fedorapeople.org/balsa/ (non-commercial; Balsa; for GNOME)
http://trojita.flaska.net/ (non-commercial; Trojit�)
http://www.mailpile.is/ (non-commercial; Mailpile; privacy; in alpha as of 8/13)
https://www.neomailbox.com/ (non-commercial; neomailbox; privacy email)
http://freedomboxfoundation.org/ (non-commercial; FreedomBox; privacy email)
https://www.mailpile.is/ (offline secure email; non-commercial; Mailpile)
http://rambox.pro/# (non-commercial; Rambox; includes messaging)
https://pawsa.fedorapeople.org/balsa/ (non-commercial; balsa)
https://nylas.com/ (commercial w/ free trial; Nylas; web based)
http://powerdns.com/products/powermail/index.php (commercial & non-commercial: PowerMail)
http://www.axigen.com/mail-server/ (commercial w/ free trial; AXIGEN)
https://nylas.com/ (commercial w/ free trial; Nylas)
https://opensource.com/life/15/9/open-source-alternatives-gmail (5 open source alternatives to Gmail; 9/10/15)
http://www.linuxlinks.com/Software/Internet/Mail/Notification/index.shtml (list of email notification programs)

Encryption
http://www.gnupg.org/ (non-commercial; GnuPG)
http://luks.endorphin.org/ (non-commercial; LUKS)
http://www.scherrer.cc/crypt/ (non-commercial; CrossCrypt)
http://ccrypt.sourceforge.net/ (non-commercial; ccrypt)
http://www.truecrypt.org/ (non-commercial; TrueCrypt; discontinued - use alternatives)
https://www.comparitech.com/blog/information-security/truecrypt-is-discoutinued-try-these-free-alternatives/ (TrueCrypt is discontinued, try these free alternative disk encryption tools; 11/22/16)

Enterprise resource planning (overlap with accounting and point-of-sale)
http://openerp.com/ (commerical; Open ERP)
http://www.openbravo.com (non-commercial; Openbravo)

Fax
http://www.fax2send.com/fax2send/page/home.html (commercial; fax2send)
http://gfax.cowlug.org/ (non-commercial; GFAX)
http://www.washington.edu/pine/ (non-commercial; Pine)
http://www.hylafax.org/content/Main_Page (non-commercial; HylaFAX)

File Transfer Protocol
https://filezilla-project.org/ (non-commercial; Filezilla)

File Manager
http://www.konqueror.org/ (non-commercial; Konqueror)
http://live.gnome.org/Nautilus (non-commercial; Nautilus)
http://thunar.xfce.org/index.html (non-commercial; Thunar)
http://www.gnu.org/s/mc/ (non-commercial; Midnight Commander)
http://pcmanfm.sourceforge.net/ (non-commercial; PCMan)
http://dolphin.kde.org/ (non-commercial; Dolphin)
http://www.krusader.org/ (non-commercial; Krusader)
http://roscidus.com/desktop/ROX-Filer (non-commercial; ROX-Filer)
http://roland65.free.fr/xfe/ (non-commercial; X File Manager)
http://awesome.naquadah.org/ (non-commercial; awesome)
http://obsession.se/gentoo/ (non-commercial; gentoo; not a linux distro)

File Sharing
https://onionshare.org/ (non-commercial; OnionShare; private file sharing)
http://azureus.sourceforge.net/ (non-commercial; Azureus)
http://www.emule-project.net/ (non-commercial; emule)

Filter
http://dansguardian.org/ (non-commercial; DansGuardian)
http://www.glubble.com/ (non-commercial; Glubble; use with firerfox)
http://www.censornet.com/ (commercial; CensorNet)

Firewall
http://www.fs-security.com/ (non-commercial; Firestarter)
http://www.tripwire.org/ (non-commercial; Tripwire)
http://www.simonzone.com/software/guarddog/ (non-commercial; Guarddog)
http://www.fwbuilder.org/ (non-commercial & commercial; Firewall Builder)
http://www.smoothwall.org/
http://shorewall.net/ (non-commercial; Shorewall)
http://www.ipcop.org/ (commercial; IPCop)
http://www.clarkconnect.com/ (commercial; ClarkConnect)

Fitness
http://www.workoutware.com/ (commercial; Open Fitness)

Flash
http://gplflash.sourceforge.net/ (non-commercial; GPLFlash )
http://www.gnu.org/software/gnash/ (non-commercial; Gnash)
http://swfdec.freedesktop.org/wiki/ (non-commercial; Swfdec)
http://lightspark.github.com/ (non-commercial; Lightspark)
http://get.adobe.com/flashplayer/otherversions/ (commercial; adobe flash)

Font
http://freetype.sourceforge.net/index2.html (non-commercial; FreeType)

Forums
http://www.phpbb.com/ (non-commercial; phpBB)
http://www.vbulletin.com/ (commercial + free demo; vBulletin)
http://atechguide.com/top-free-forum-software/ (Top 10 free forum software and Free Forum creator tools; 12/13)

FTP Equivalents
http://gftp.seul.org/ (non-commercial; gFTP)
http://www.samba.org/rsync/ (non-commercial; rsync)
http://lftp.yar.ru/ (non-commercial; LFTP)
http://vsftpd.beasts.org/ (non-commercial; vsftpd)
http://www.columbia.edu/kermit/ck80.html (non-commercial; C-Kermit)
http://kasablanca.berlios.de/ (non-commercial; Kasablanca)
http://www.proftpd.org/ (non-commercial; server; ProFTPD)
http://www.glub.com/ (commercial; Secure FTP Wrapper)
http://www.vandyke.com (commercial; various programs)
http://www.stdnet.com/ (commercial; various programs)
http://www.iglooftp.com/linux/ (commercial; IglooFTP)

Games
http://www.linux-games.com/ (non-commercial; linux-games)
http://www.linux-gamers.net/ (non-commercial; linux-gamer)
http://www.linuxgames.com/ (non-commercial; LinuxGames)
http://www.happypenguin.org/ (non-commercial; The Linux Game Tome)
http://www.linuxlinks.com/Software/Games/ (non-commercial; LinuxLinks.com Games)
http://www.gnubg.org/ (non-commercial; Backgammon - gnubg)
http://www.bergo.eng.br/eboard/ (non-commercial; Chess - eboard)
http://www.gnu.org/software/xboard/ (non-commercial; Chess - XBoard)
http://www.gnu.org/software/chess/chess.html (non-commercial; Chess - GNU Chess)
http://noughmad.eu/knights (non-commercial; Chess - Knights/KDE)
http://www.datamation.com/open-source/100-funnest-open-source-games-and-apps-1.html (100 "Funnest" Open Source Games and Apps; 7/17/12)

Graphics
http://www.gnuplot.info/ (non-commercial; GNUplot)
http://www.gimp.org/ (non-commercial; GIMP)
http://www.gimpshop.com/ (non-commercial; GIMPshop; GIMP add-on)
http://www.inkscape.org/ (non-commercial; INKSCAPE)
http://www.tuxpaint.org/ (non-commercial: TuxPaint [children])
http://scilabsoft.inria.fr/ (non-commercial; SciLab)
http://gtkmmviewer.sourceforge.net/ (non-commercial; GImageView)
http://www.octave.org/ (non-commercial; Octave)
http://www.r-project.org/ (non-commercial; r-project)
http://www.kanzelsberger.com/pixel/ (non-commercial; Pixel)
http://live.gnome.org/Dia (non-commercial; dia)
http://www.opengl.org/documentation/ (non-commercial; OpenGL)
http://www.svgalib.org/ (non-commercial; SVGAlib)
http://www.koffice.org/krita/ (non-commercial; Krita [part of KOffice])
http://xaralx.org/ (non-commercial; Xaralx)
http://labplot.sourceforge.net/index.html (non-commercial; LabPlot)
http://xfig.org/ (non-commercial; Xfig)
http://www.koffice.org/karbon/ (non-commercial; Karbon [part of KOffice])
http://sk1project.org/ (non-commercial; sK1)
http://www.skencil.org/ (non-commercial; Skencil)
http://qtpfsgui.sourceforge.net/ (non-commercial; Qtpfsgui; HDR imaging application>
http://mypaint.intilinux.com/ (non-commercial; MyPaint)
http://kolourpaint.sourceforge.net/ (non-commercial; KolourPaint; KDE)
http://krita.org/ (non-commercial; Krita)
http://www.cinepaint.org/ (non-commercial; CinePaint)
http://www.pencil-animation.org/ (non-commercial; Pencil)
http://www.synfig.org/ (non-commercial; Synfig)
http://www.skencil.org/ (non-commercial; Skencil)
http://www.koffice.org/kivio/ (non-commercial; Kivio; KOffice flowchart)
http://www.ktoon.net/portal/> (non-commercial; Ktoon)
https://pinta-project.com/pintaproject/pinta/ (non-commercial; Pinta)
http://www.xara.com/ (commercial; Xara)
http://www.linuxartist.org (non-commercial; various utilities)
http://www.linuxsoft.cz/en/sw_list.php?id_kategory=20 (various programs)

Greeting Cards
http://www.kde-apps.org/content/show.php?content=17869 (non-commercial; KreetingKard)

Groupware (Email, Calendar, etc)
http://phpgroupware.org/ (non-commercial; phpGroupWare)
http://www.horde.org/ (non-commercial; Horde)
http://www.kolab.org (non-commercial; Kolab)
http://www.open-xchange.com/ (non-commercial; open-xcheng)
http://www.simple-groupware.de/cms/ (non-commercial; Simple Groupware & CMS)
http://www.citadel.org/ (non-commercial; Citadel)
http://www.sogo.nu/english.html (non-commercial; sogo)
http://www.egroupware.org/ (non-commercial; eGroupware)
http://www.zimbra.com/ (commercial; Zimbra)
http://www.scalix.com/ (commercial; Scalix)
http://www.zarafa.com/content/home (commercial; Zarafa; free trial)

Hardware Information
http://wiki.hardinfo.org/HomePage (non-commercial; HardInfo)
https://github.com/nicolargo/glances (non-commercial; Glances)
see console command, lshw

Health
http://www.healthengage.com/healthengagediabetes-me.html (commercial; Diabetes)

Game
http://www.tuxarena.com/2014/02/several-great-linux-terminal-games/ (Several Great Linux Terminal Games; 2/22/14)

Installation
http://www.nongnu.org/synaptic/ (non-commercial; Synaptic; debian GUI Installer)
http://www.kitenet.net/programs/alien/ (non-commercial; Alien; interchanges deb, rpm, tgz, ...)
http://autopackage.org/index.html (non-commercial; autopackage)
http://zero-install.sourceforge.net/ (non-commercial; Zero Install system)
http://klik.atekon.de/ (non-commercial; klik)
http://www.ksplice.com/ (non-commercial; Ksplice)
http://keryxproject.org/ (non-commercial; Keryx [cross-platform package manager)
http://www.linuxbsdos.com/2011/11/19/top-6-linux-and-bsd-graphical-installation-programs/ (Top 6 Linux and BSD graphical installation programs; 11/19/11)

Instant Messaging
http://pidgin.im/ (non-commercial; Pidgin)
https://tox.chat/index.html (non-commercial; Tox)
https://tox.chat/clients.html (list of Tox GUI variants) http://developer.pidgin.im/wiki/Using%20Finch (non-commercial; Finch [terminal pidgin])
http://www.centerim.org/index.php/Main_Page (non-commercial; CenterIM)
https://www.crypho.com/ (non-commercial; Crypho; private chat)
http://www.igniterealtime.org/projects/openfire/ (non-commercial; Openfire)
https://tox.chat/ (non-commercial; Tox; privacy)
https://github.com/qTox/qTox (non-commercial; qTox; privacy?)
http://wwwm.meebo.com/index-en.html (commercial;, but free; Meebo; web-based)

Inventory
http://anyinventory.sourceforge.net/

iPod
http://lincgeek.org/bashpodder/ (non-commercial; BashPodder)
http://gpodder.org/ (non-commercial; gPodder)
http://penguintv.sourceforge.net/ (non-commercial; PenguinTV; RSS & video also)

IRC
http://www.tuxarena.com/intro/ref_irc.php (IRC Clients for Linux;10/11/14)

Journal
http://xournal.sourceforge.net/ (non-commercial; Xournal)

Label
http://glabels.sourceforge.net/ (non-commercial; gLabels)

Language
http://lingoteach.sourceforge.net/ (non-commercial; LingoTeach)
http://new.asymptopia.org/staticpages/index.php/NewStepIntoChinese (non-commercial; Step Into Chinese)
http://zwdisplay.sourceforge.net/ (non-commercial; ZWDisplay)

LaTeX Editor
http://dev.midnightcoding.org/projects/gummi (non-commercial; Gummi)
http://www.xm1math.net/texmaker/ (non-commercial; Texmaker)
http://texlipse.sourceforge.net/ (non-commercial; TeXlipse)

Mathematics
http://www.calculatorium.com/calculators/ (commercial, but free online calculators; Calculatorium)
http://mathomatic.orgserve.de/math/ (non-commercial; Mathomatic)
http://maxima.sourceforge.net/ (non-commercial; Maxima)
http://www.sagemath.org/ (non-commercial; SAGE: Open Source Mathematics Software)
http://www.gnu.org/software/octave/ (non-commercial; Octave)
http://www.sagemath.org/ (non-commercial; Sage)
http://www.jirka.org/genius.html (non-commercial; Genius Mathematics Tool)
http://freemat.sourceforge.net/ (non-commercial; FreeMat; rapid engineering and scientific processing)
http://www.calculatorium.com/best-open-source-mathematical-software/ (list: Best Open Source Mathematical Software; 8/21/13)

Map
https://marble.kde.org/ (non-commercial; Marble [KDE])
https://wiki.gnome.org/Design/Apps/Maps (non-commercial; Maps [GNOME])

Management
http://www.dotproject.net/ (non-commercial; dotProject)
http://www.redmine.org/ (non-commercial; Redmine)
http://www.phprojekt.com/ (non-commercial; PHProjekt)
http://www.projectlibre.org/home (non-commercial; ProjectLibre; replaces Microsoft Project)
http://www.zoho.com/projects/ (commercial; Zoho Projects)
http://www.thekompany.com/projects/aethera/ (commercial support; free download; Aethera)

Medical
http://wiki.gnumed.de/bin/view/Gnumed (non-commercial; GNUmed)
http://goomedic.com/ (list of softwares; GooMedic.com)
http://www.medicaportal.com/forum/pg/topicview/misc/general-chat/best-open-source-medical-and-healthcare-software/ (Best Open Source Medical and Healthcare Software; 10/16/13)

Memory
http://freshmeat.net/projects/procps/ (non-commercial; procps)

Menu Editor
http://www.smdavis.us/projects/menulibre/ (non-commercial; MenuLibre)

Messaging
https://desktop.telegram.org/ (non-commercial; Telegram)
(non-commercial; SaaS messaging; Mattermost)
http://rambox.pro/# (non-commercial; Rambox; includes email)

Migration
http://www.versora.com/products/progression_desktop.php (commercial; Versora Progression Desktop)

Mobile Internet
http://moblin.org/ (non-commercial; moblin.org)

Mobile Phone
http://www.gnokii.org/ (non-commercial; gnokii)
http://www.multisync.org/news.php (non-commercial; MultiSync)

Modem
http://alumnit.ca/wiki/index.php?page=WvDial (non-commercial: WvDial)
http://alioth.debian.org/projects/minicom/ (non-commercial: minicom)
http://sourceforge.net/projects/pengaol/ (non-commercial; Peng; for AOL)

Note: Movie/Video, Multimaedia, and Music overlaps

Movie/Video (including TV)
http://xinehq.de/ (non-commercial; Xine)
http://www.mplayerhq.hu/design7/news.html (non-commercial; MPlayer)
http://www.mythtv.org/ (non-commercial; MythTV)
http://kaffeine.sourceforge.net/ (non-commercial; Kaffeine)
http://www.kdenlive.org/ (non-commercial; Kdenlive)
http://sinek.sourceforge.net/ (non-commercial; Sinek)
http://www.videolan.org/vlc/ (non-commercial; VLC media player)
http://linux.bytesex.org/xawtv/ (non-commercial; xawtv)
http://backuppc.sourceforge.net/http://kino.schirmacher.de/ (non-commercial; Kino)
http://www.videolan.org/ (non-commercial; VideoLAN)
http://www.icewalkers.com/Linux/Software/523200/LiVES.html (non-commercial; LiVES)
http://www.kraus.tk/projects/konverter/ (non-commercial; Konverter)
http://www.tuxbox.org/ (non-commercial; DBox2; + howto)
http://linuxmce.com/ (non-commercial; linuxMCE)
http://smplayer.sourceforge.net/ (non-commercial; SMPlayer)
http://xbmc.org/ (non-commercial; XBMC)
http://minitube.robertinglin.com/ (non-commercial; minitube; for youtube viewing)
http://tvtime.sourceforge.net/ (non-commercial; tvtime)
http://zattoo.com/en (commercial, but free software; Zattoo; Europe)
http://www.livestation.com/ (commercial, but free software; Livestation)
http://www.boxee.tv/homepage/ (commercial, but free software; Boxee)
http://www.sopcast.org/ (commercial, but free software; SopCast [P2P])
http://ww1.titantv.com/ (commercial; TitanTV)
http://www.octoshape.com/ (commercial; OCTOSHAPE)
http://vivapinkfloyd.blogspot.com/2008/06/linux-video-players.html (11 Video Players for Linux)

Multimedia
http://www.libsdl.org/index.php (non-commercial; Simple DirectMedia Layer)

Music
http://amarok.kde.org/ (non-commercial; Amarok; KDE)
http://www.rosegardenmusic.com/ (non-commercial; Rosegarden)
http://sourceforge.net/projects/dguitar/ (non-commercial; Guitar Pro)
http://www.skale.org/ (non-commercial; SKALE TRACKER>
http://www.soundtracker.org/ (non-commercial; SoundTracker)
http://lmms.sourceforge.net/ (non-commercial; LMMS)
http://www.opensourcemusic.info/ (various stuffs and docs)
http://lilypond.org/web/ (non-commercial; LilyPond)
http://zynaddsubfx.sourceforge.net/ (non-commercial; ZynAddSubFX)
http://www.hydrogen-music.org/ (non-commercial; Hydrogen)
http://www.javazoom.net/jlgui/documents.html (non-commercial; jlGui)
http://audacious-media-player.org/ (non-commercial; Audacious)
http://www.renoise.com/ (non-commercial; Renoise; somposition>
http://www.listen-project.org/ (non-commercial; Listen [GNOME])
http://www.sacredchao.net/quodlibet/ (non-commercial; Quod Libet)
http://decibel.silent-blade.org/ (non-commercial; Decibel Audio Player)
http://www.tuxguitar.com.ar/ (non-commercial; TuxGuitar)
http://www.renoise.com/ (non-commercial; Renoise)
http://moc.daper.net/ (non-commercial; MOC [Music on Console])
http://cmus.sourceforge.net/ (non-commercial; cmus)
http://mp3blaster.sourceforge.net/ (non-commercial; mp3blaster)
http://www.vorbis.com/ (non-commercial; vorbis)
http://www.mpg123.de/ (non-commercial; mpg123)
http://decibel.silent-blade.org/ (non-commercial; Decibel Audio Player; GNOME)
http://traverso-daw.org/ (non-commercial; Traverso [recording & editing])
http://banshee-project.org/ (non-commercial; Banshee)
http://code.google.com/p/clementine-player/ (non-commercial; Clementine)
http://sourceforge.net/projects/guayadeque/ (non-commercial; Guayadeque)
http://projects.gnome.org/rhythmbox/ (non-commercial; Rhythmbox)
http://code.google.com/p/quodlibet/ (non-commercial; Quod Libet)
http://www.exaile.org/ (non-commercial; Exaile)
http://mpd.wikia.com/wiki/Music_Player_Daemon_Wiki (non-commercial; Music Player Daemon)
http://deadbeef.sourceforge.net/ (non-commercial; DeaDBeeF)
http://www.tecmint.com/best-linux-audio-music-players/ (21 Best Music Players That Are Worth Trying On Linux; 11/2/15)

Music Editor (overlap with Music)
http://www.denemo.org/ (non-commercial; Denemo)
http://lilypondtool.blogspot.com/ (non-commercial; LilyPondTool)
http://kwave.sourceforge.net/ (non-commercial; Kwave; KDE)
https://launchpad.net/jokosher/ (non-commercial; Jokosher)

Navigation
http://navit.sourceforge.net/ (non-commercial; Navit)
http://gpsdrive.de/ (non-commercial; GpsDrive)

Network (including network monitor)
http://etherape.sourceforge.net/ (non-commercial; EtherApe)
http://iptraf.seul.org/ (non-commercial; IPTraf)
http://www.nagios.org/ (non-commercial; Nagios)
http://wifi-radar.systemimager.org/ (non-commerical; WiFi Radar)
http://developer.apple.com/networking/bonjour/index.html (commercial; Bonjour)
http://www.wireshark.org/ (commercial, but free basic; Wireshark)
http://www.linuxuser.co.uk/reviews/top-4-linux-network-managers (Top 4 Linux network managers; 10/17/14)

News Readers/RSS
http://newspipe.sourceforge.net/ (non-commercial; Newspipe [email])
http://www.gnome.org/projects/straw/ (non-commercial; Straw [GNOME])
http://syndigator.sourceforge.net/ (non-commercial; Syndigator)
http://kiza.kcore.de/software/snownews/ (non-commercial; Snownews [text])
http://www.cincomsmalltalk.com/BottomFeeder/ (non-commercial; BottomFeeder)
http://liferea.sourceforge.net/ (non-commercial; Liferea)
http://www.mozilla.org/products/firefox/live-bookmarks.html (non-commercial; Live Bookmarks; Firefox web browser extension)
http://inforss.mozdev.org/ (non-commercial; infoRSS)
http://sage.mozdev.org/ (non-commercial; Sage; Firefox web browser extension)
http://www.wizzcomputers.com/Welcome.php (non-commercial; Feedview; Firefox web browser extension)
http://www.rssowl.org/ (non-commercial; RSSOwl)
http://newsbeuter.org/ (non-commercial; newsbeuter)
http://userbase.kde.org/Akregator (non-commercial; Akregator)
http://freshrss.org/ (non-commercial; FreshRSS)
http://www.tuxarena.com/intro/ref_rss.php (Feed Readers for Linux; 10/17/14)

Notes
http://live.gnome.org/Gnote (non-commercial; Gnote)
https://simplenote.com/ (non-commercial; Simplenote)
https://sourceforge.net/projects/nevernote/ (non-commercial; NixNote)
http://www.tuxarena.com/intro/ref_notes.php (Notes-Taking Applications for Linux; 3/17/14)
https://turtlapp.com/ (non-commercial; Turtl)

Optical Character Recognition
http://www.linux-ocr.ekitap.gen.tr/ (list)

Package Manager
http://www.nongnu.org/synaptic/ (non-commercial; Synaptic Package Manager)
http://linux.duke.edu/projects/yum/ (non-commercial; Yum)
http://www.linuxbsdos.com/2011/11/19/top-6-linux-and-bsd-graphical-installation-programs/ (Top 6 Linux and BSD graphical installation programs; 11/19/11)
http://gparted.sourceforge.net/ (non-commercial; GParted)
http://gparted-livecd.tuxfamily.org/ (non-commercail; Gparted-liveCD)
http://www.sysresccd.org/ (non-commercial; SystemRescueCd)
http://www.gnu.org/software/parted/parted.html (non-commercial; Parted)
http://qtparted.sourceforge.net/ (non-commercial; QTParted)
http://www.partimage.org/ (non-commercial; Partition Image)
http://partedmagic.com/wiki/PartedMagic.php (non-commercial; Parted Magic)
http://www.ranish.com/part/ (non-commercial; Ranish)
A http://www.gnu.org/software/guix/ (non-commercial; Guix)
http://www.fs-driver.org/ (non-commercial; Ext2 Installable File System; reads linux files from window)

Password Manager
http://www.fpx.de/fp/Software/Gorilla/ (non-commercial; Gorilla)
http://passwordmaker.org/ (non-commercial; PasswordMaker)
http://passwordmanager.sourceforge.net/ (non-commercial; PwManager)
http://upm.sourceforge.net/(non-commercial; Universal Password Manager)

PDA
http://www.multisync.org/news.php (non-commercial; MultiSync)
http://www.coldsync.org/ (non-commercial; ColdSync)
http://www.jpilot.org/ (non-commercial; J-Pilot)
http://picsnvideos.sourceforge.net/ (non-commercial; J-Pilot Videos Plugin)
http://pilotmanager.sourceforge.net/ (non-commercial; PilotManager)
http://www.pilot-link.org/ (non-commercial; pilot-link)
http://gpe.handhelds.org/ (non-commercial; GPE)
http://www.opensync.org/ (non-commercial; OpenSync; successor of Multisync)

PDF and Postscript readers listed w/ Programming
Pharmacy (overlap with Medical)
http://www.srspharmacy.com/index-3.html (commercial; PKonRx)

Phone (including video phone)
http://www.ekiga.org/ (non-commercial; Ekiga; includes videophone)
http://gphone.sourceforge.net/ (non-commercial; Gnome-o-phone)
http://www.antcom.de/ant-phone/ (non-commercial; ANT)
http://phpaint.sourceforge.net/pyvoicechat/ (non-commercial; Gyach)
http://www.twinklephone.com/ (non-commercial; Twinkle)
http://www.vocpsystem.com/index.php (non-commercial; VOCP; call answering/voice messaging)
http://kiax.sourceforge.net/ (non-commercial; Kiax)
http://www.linphone.org (non-commercial; Linphone)
http://www.freeswitch.org/ (non-commercial; FreeSWITCH)
http://www.vocpsystem.com/index.php (non-commercial; VOCP; call answering/voice messaging)
http://live.gnome.org/Empathy (non-commercial; Empathy)
https://ring.cx/en (online secure videophone; non-commercial; Ring)
http://tox.im/ (non-commercial; Tox, private IM, phone, & videophone)
http://trac.qutecom.org/ (non-commercial; QuteCom [formerly WengoPhone])
http://www.icanblink.com/ (non-commercial; Blink)
http://www.webrtc.org/ (non-commercial; WebRTC)
https://jitsi.org/Projects/JitsiVideobridge (non-commercial; Videobridge; multi-party video)
https://ring.cx (non-commercial; Ring; privacy)
https://appear.in/ (commercial, but free online???; online video)
http://www.jitsi.org/ (commercial; Jitsi (SIP Communicator); paid support, but free source)
http://skype.com/ (commercial; Skype; free basics)
http://www.qnext.com/ (commercial; Qnext; free basics)
http://www.gizmoproject.com/ (commercial; Gizmo; free basics)
http://www.philzimmermann.com/EN/zfone/index.html (commercial; Zfone;secure)
(commercial; Viber; free if wifi to another Viber member)
https://about.riot.im/ (commercial; multi-language; Riot)

Photo (see Graphics also)
http://www.gimphoto.com/ (non-commercial; GIMPPhoto)
http://picasa.google.com/linux/index.html (non-commercial; Picasa)
http://www.gphoto.org/ (non-commercial; gPhoto2)
http://photobatch.stani.be/ (non-commercial; Phatch)
http://f-spot.org/Main_Page (non-commercial; F-Spot)
http://gwenview.sourceforge.net/ (non-commercial; Gwenview)
http://extragear.kde.org/apps/kipi/ (non-commercial; Kipi; KDE)
http://kornelix.squarespace.com/fotoxx/ (non-commercial; Fotoxx)
http://bluemarine.tidalwave.it/ (non-commercial; blueMarine)
http://rawstudio.org/ (non-commercial; Rawstudio)
http://www.rawtherapee.com/ (non-commercial; Raw Therapee)
http://f-spot.org/Main_Page (non-commercial; F-Spot)
http://www.digikam.org/ (non-commercial; digiKam)
http://www.kphotoalbum.org/ (non-commercial; KPhotoAlbum)
http://www.renderpixie.com/ (non-commercial; Pixie)
http://sunflow.sourceforge.net/ (non-commercial; Sunflow)
http://hugin.sourceforge.net/ (non-commercial; RawTherapee)
https://kornelix.net/fotoxx/fotoxx.html (non-commercial; Fotoxx)
http://krita.org/ (non-commercial; Krita [KDE])
https://rawtherapee.com/ (non-commercial; Hugin)
http://www.darktable.org/ (non-commercial; darktable)
http://bibblelabs.com/ (commercial; Bibble)
http://www.lightcrafts.com/linux/ (commercial, but free trial; LightZone)
http://minus.com/ (commercial; Minus; share files & music also)

Point of Sale
http://www.bananapos.com/pos/home.html (non-commercial; BananaPOS)
http://lemonpos.sourceforge.net/ (non-commercial; Lemon Pos)
http://tuxshop.sourceforge.net/index.php (non-commercial; TuxShop)
http://freshmeat.net/projects/bhpos (non-commercial; BananaPos)
http://www.novell.com/products/linuxpointofservice/ (commercial; SUSE® Linux Enterprise Point of Service)
http://www.volantesystems.com/volante/html/ (commercial; Volanté)

Poll
http://www.pollhost.com/ (commercial, but free; Pollhost; online)
http://www.hotscripts.com/Remotely_Hosted/Polls_and_Voting/ (list)

Postscript
http://pages.cs.wisc.edu/~ghost/ (non-commercial; Ghostscript)

Presentation
http://member.wide.ad.jp/wg/mgp/ (non-commercial; MagicPoint)

Printer
http://homokaasu.org/rasterbator/ (non-commercial; Rasterbator)
http://www.turboprint.de/english.html (commercial; TurboPrint)

Privacy
http://www.mozilla.org/en-US/lightbeam/ (non-commercial; Firefox add-on; Lightbeam for Firefox)
http://www.csoonline.com/article/574763/Seven_Firefox_Plug_ins_That_Improve_Online_Privacy (Seven Firefox Plug-ins That Improve Online Privacy); 3/12/10)
https://www.crypho.com/ (non-commercial; Crypho; private chat)
http://bleachbit.sourceforge.net/ (non-commercial; BleachBit; clean cookies, temp. files, logs, etc)
http://www.dazzleships.net/ (non-commercial; SelekTOR)

Programming Editor
http://www.geany.org/ (non-commercial; Geany)
http://www.wxhexeditor.org/ (non-commercial; weHexEditor)
http://worldofgnome.org/5-of-the-best-programming-editors-under-linux-2014/ (5 Of The Best Programming Editors Under Linux [2014]; 1/21/14)
http://devzum.com/2015/01/31/9-best-ides-and-code-editors-for-javascript-users/ (9 Best IDEs and Code Editors for JavaScript Users; 1/31/15)
(non-commercial; Notepadqq)
(non-commercial; Atom)
http://brackets.io/ (non-commercial; Brackets)
https://notepadqq.com/s/ (non-commercial; Notepadqq)

Publishing
http://www.scribus.net/ (non-commercial; Scribus)
http://wordpress.org/ (non-commercial; WordPress)
http://www.latex-project.org/ (non-commercial; LaTex)
http://www.tug.org/ (non-commercial; Tex)
http://kile.sourceforge.net/ (non-commercial; Kile)
http://www.iwebpress.com/ (non-commercial; newspaper; iWebPress)
http://wiki.docbook.org/topic/DocBookAuthoringTools (non-commercial; DocBook Wiki)

Radio
http://www.campware.org/en/camp/campcaster_news/ (non-commercial; Campcaster)
http://www.backbone.com/ (commercial; Backbone)

Reference Management
http://xmodulo.com/reference-management-software-linux.html (What is good reference management software on Linux; 10/10/14)

Reminder
http://todotxt.com/ (non-commercial; Todo.txt)

Robot
http://playerstage.sourceforge.net/ (non-commercial; The Player Project)
http://openrdk.sourceforge.net/ (non-commercial; OpenRDK)
http://www.ros.org/wiki/ (non-commercial; ROS.org)

Router
http://www.infoworld.com/d/networking/review-6-slick-open-source-routers-206810 (Review: 6 slick open source routers; 11/14/12)
http://www.freesco.org/ (non-commercial; FREESCO)

Satellite (see Weather too)
http://www.earth3d.org/ (non-commercial; Earth3D)
http://worldwind.arc.nasa.gov/index.html (non-commercial; World Wind; use java)
https://www.unidata.ucar.edu/software/idv/ (non-commercial; IDV)

Scanner
http://www.sane-project.org/ (non-commercial; SANE)
http://www.xsane.org (non-commercial; XSane)
https://launchpad.net/simple-scan (non-commercial; Simple Scan)
http://gscan2pdf.sourceforge.net/ (non-commercial; gscan2pdf; create pdf from scans)
http://sourceforge.net/projects/quiteinsane/ (non-commercial; QuiteInsanel; GUI frontend for SANE)
http://kooka.kde.org/ (non-commercial; Kooka)
http://www.hamrick.com (commercial; VueScan)

Screen Reader
http://www.linux-speakup.org/ (non-commercial; The Speakup Project)
http://directory.fsf.org/project/gnopernicus/ (non-commercial; Gnopernicus)
https://wiki.gnome.org/Projects/Orca (non-commercial; Orca; [GNOME})

Search
https://duckduckgo.com (web search w/ privacy)
http://lucene.apache.org/nutch/ (web search; non-commercial; Nutch)
http://yacy.net/en/ (non-commercial; YaCy; peer-to-peer web search)
https://ssl.scroogle.org/ (google search w/ privacy)
https://ixquick.com/ (web search w/ privacy)
https://searx.me/ (web search w/ privacy; non-commercial; searX)
http://www.twotoasts.de/index.php/catfish/ (desktop search; non-commercial; Catfish)
http://beagle-project.org/Main_Page (desktop search; non-commercial; Beagle)
http://desktop.google.com/linux/ (desktop search; non-commercial; Google Desktop)
http://www.lesbonscomptes.com/recoll/ (desktop search; non-commercial; Recoll)
http://strigi.sourceforge.net/ (desktop search; non-commercial; Strigi)
http://projects.gnome.org/tracker/ (desktop search; non-commercial; Tracker)
http://docfetcher.sourceforge.net/en/index.html (desktop search; non-commercial; DocFetcher)
http://pinot.berlios.de/ (desktop search; non-commercial; Pinot)

Security (data)
http://www.snort.org/ (non-commercial; Snort)
http://www.insecure.org/nmap/ (non-commercial; Nmap)
http://www.rootkit.nl/projects/lynis.html (non-commercial; Lynis; Security and system auditing tool)
http://www.cipherdyne.org/ (non-commercial; various)
https://grc.com/ (commercial; various programs)
http://www.astaro.com/# (commercial; Astaro's products)
http://www.ipcop.org/ (commercial; IPCop)
http://www.clarkconnect.com/ (commercial; ClarkConnect)
http://www.inmon.com/ (commercial; InMon)
http://www.acronis.com/ (commercial; Acronis)

Security (stolen laptop)
http://preyproject.com/ (non-commercial; Prey)

Server
http://www.apache.org/ (non-commercial; Apache)
http://www.apachefriends.org/en/xampp-linux.html (non-commercial; XAMPP [was LAMPP])
http://www.zimbra.com/ (non-commercial; Zimbra)
http://donaldmcintosh.net/resource/triki (non-commercial; triki; Semantic Web Server)
http://userful.com/products/ (commercial; Desktop Multiplier + Desktop Server + etc)
http://www.aprelium.com/ (commercial; Abyss)

Server Analysis
http://www.webalizer.org/ (non-commercial; Webalizer)
http://www.awstats.org/ (non-commercial; AWStats)
https://my-netdata.io/ (non-commercial; netdata)
https://unix4lyfe.org/darkstat/ (non-commercial; darkstat)
http://www.bbclone.de/ (non-commercial; BBClone)

Sleep mode
http://www.suspend2.net/ (non-commercial; Software Suspend)

Social Media
https://elgg.org/ (social media w/ privacy; non-commercial; elgg)
target="_blank" https://diasporafoundation.org/ (non-commercial; diaspora*)
https://github.com/baedert/corebird (non-commercial; Corebird; use for Twitter)

Software Environment
http://www.eclipse.org/ (non-commercial; Eclipse)

Software Configuration Management System
http://fossil-scm.org/index.html/doc/tip/www/index.wiki (non-commercial; Fossil)

Sound/Audio
http://ardour.org/ (non-commercial; Ardour)
http://audacity.sourceforge.net/ (non-commercial; Audacity)
http://www.nongnu.org/protux/ (non-commercial; Protux)
http://www.xmms.org/ (non-commercial; XMMS)
http://www.arts-project.org/ (non-commercial; aRts)
http://www.videolan.org/vlc/ (non-commercial; VLC media player)
http://ifp-gnome.sourceforge.net/ (non-commercial; iFP-Gnome)
http://www.opensound.com/ (commercial; open sound system)
http://opensource.creative.com/ (commercial, but free; Creative Soundcard)
http://sourceforge.net/projects/ripperx/ (non-commercial; ripperX)
http://nostatic.org/grip/ (non-commercial; Grip)
http://qtractor.sourceforge.net/qtractor-index.html (non-commercial; Qtractor)

Spam
http://popfile.sourceforge.net/ (non-commercial; popfile)
http://spambayes.sourceforge.net/ (non-commercial; SpamBayes)

Speech Recognition
http://cmusphinx.sourceforge.net (non-commercial; Sphinx)
http://www.speech.cs.cmu.edu/pocketsphinx/ (non-commercial; PocketSphinx)
http://brewer123.home.comcast.net/~brewer123/projects/speechlion/README.html (non-commercial; SpeechLion; uses Sphinx)
http://htk.eng.cam.ac.uk/ (non-commercial; HTK)
http://julius.sourceforge.jp/en_index.php (non-commercial; Julius)
http://www.voxforge.org/ (non-commercial; VoxForge; alpha as of 9/27/08)
http://freespeech.sourceforge.net/ (non-commercial; Open Mind Speech' alpha as of 9/27/08)
http://antlr.org/ (non-commercial; ANTLR)
http://freedompenguin.com/articles/matts-quick-tips/transcribe-speech-to-text-with-linux-and-google/ (Chrome/pavucontrol/PulseAudio)
http://live.gnome.org/GnomeVoiceControl (non-commercial; Gnome-Voice-Control)
http://code.google.com/p/voximp/ (non-commercial; voximp)
https://github.com/andre-luiz-dos-santos/speech-app (non-commercial; speech-app)
http://www.handheldspeech.com/ (commercial; Handheld Speech)
http://www.wizzardsoftware.com/wizzard_wizzscribe_si.php (commercial; WizzScribe SI)

Statistic
http://www.gnu.org/software/pspp/pspp.htmlhttps://geckolinux.github.io/ (non-commercial; PSPP)

Stock Ticker
http://www.alphatrade.com/stock-market-software-real-time-quote.php (commercial; E-Gate)
http://a.domaindlx.com/joetzzz/mozdev/stockquote/ (non-commercial; Stock Quote; Firefox web browser extension)

Stolen Laptop
http://preyproject.com/ (non-commercial; Prey)

Surveilance
http://www.torproject.org/index.html.en (commercial; Tor)

System Administrtor
http://www.webmin.com/ (non-commercial; Webmin)
http://cb.vu/unixtoolbox.xhtml (non-commercial; Unix Toolbox)

System Management
http://www.easilize.com/requirements.html Easilize

Tax (including on the web)
http://opentaxsolver.sourceforge.net/ (non-commercial; Open Source Tax Solver)

Terminal
http://www.afterstep.org/aterm.php (non-commercial; aterm)
http://rxvt.sourceforge.net/ (non-commercial; RXVT)
http://extragear.kde.org/apps/yakuake/ (non-commercial; extragear)
http://software.jessies.org/terminator/ (non-commercial; Terminator)
http://roxterm.sourceforge.net/ (non-commercial; RXVT)
https://launchpad.net/clicompanion (non-commercial; CLI Companion)
http://xiki.org/ (non-commercial; Xiki)
http://www.tecmint.com/linux-terminal-emulators/ (20 Useful Terminal Emulators for Linux; 2/1/14)
http://xmodulo.com/2014/05/good-terminal-emulator-linux.html (What is a good terminal emulator on Linux?; 5/28/14)

Terminal Server
http://www.ltsp.org
https://code.google.com/archive/p/termbox/ (non-commercial; termbox)

TELNET Equivalents
http://www.openssh.com/ (non-commercial; OpenSSH)
http://www.pingx.net/secpanel/ (non-commercial; SecPanel)
http://www.vandyke.com (commercial; various programs)
http://www.stdnet.com/ (commercial; various programs)

Text Editor (Emacs & vim are under console commands; programming editors are under Programming)
http://projects.gnome.org/gedit/ (non-commercial; GEdit)
http://www.jedit.org/ (non-commercial; jEdit)
http://kate-editor.org/ (non-commercial; Kate)
http://kate-editor.org/kwrite (non-commercial; KWrite; uses Kate components)
http://tarot.freeshell.org/leafpad/ (non-commercial; Leafpad)
http://www.nano-editor.org/ (non-commercial; Nano)
http://www.nedit.org/ (non-commercial; NEdit)
http://www.kde-apps.org/content/show.php?content=10966 (non-commercial; CUTE)
http://scribes.sourceforge.net/ (non-commercial; Scribe)
http://www.sublimetext.com/ (non-commercial; Sublime Text; programming)
http://www.scintilla.org/SciTE.html (non-commercial; SCIntilla/SciTE.html; programming)
http://www.fckeditor.net/ (non-commercial; FCKeditor [internet])
http://mooedit.sourceforge.net/index.html (non-commercial; medit; programming)
http://www.uvviewsoft.com/cudatext/index.html(non-commercial; CudaText)

Text Editor (collaborative)
http://gobby.0x539.de/trac/ (non-commercial; Gobby)
http://writeboard.com/ (commercial, but free; Writeboard)
http://etherpad.com/ (commercial, but free; Etherpad)
http://www.linuxbsdos.com/2014/10/05/the-best-markdown-editors-for-linux/ (The best Markdown editors for Linux; 10/5/14)

Text-to-Speech
(non-commercial; eSpeak)
http://reecedunn.co.uk/cainteoir/ (non-commercial; Cainteoir Text-to-Speech; uses eSpeak to read ebooks)
http://www.cstr.ed.ac.uk/projects/festival/ (non-commercial; Festival)
http://accessibility.kde.org/developer/kttsd/ (non-commercial; KTTS)
http://www.speech.cs.cmu.edu/flite/ (non-commercial; Flite)
http://freetts.sourceforge.net/docs/index.php (non-commercial; FreeTTS)
http://mary.dfki.de/ (non-commercial; MaryTTS)

Tide
http://www.flaterco.com/xtide/ (non-commercial; XTide)

Tile (Window Manager)
http://www.giuspen.com (non-commercial; X-tile)
http://xmonad.org/ (non-commercial; xmonad)
http://i3wm.org/ (non-commercial; i3)

Torrent
http://libtorrent.rakshasa.no/ (non-commercial; libTorrent and rTorrent Project)
http://www.tuxarena.com/intro/ref_tor.php (BitTorrent Clients for Linux; 3/13/14)

Translators
http://wordtrans.sourceforge.net/ (non-commercial; Wordtrans)
http://freespeak.berlios.de/ (non-commercial; (non-commercial; FreeSpeak)
http://logos-os.dfki.de/ (commercial & open source; OpenLogos)
http://www.babelfish.com/ (commercial & online; Babelfish)

Tutorial
http://tuxtorial.com/ (non-commercial; Tuxtorial)
http://www.debugmode.com/wink/ (non-commercial; Wink)

Typing
http://tuxtype.sourceforge.net/ (non-commercial; TuxType)

USB Installation
http://unetbootin.sourceforge.net/ (non-commercial; Unetbootin)
http://rufus.akeo.ie/ (non-commercial; Rufus)
http://multibootusb.org/ (non-commercial; multiple distros; MultiBootUSB)
https://etcher.io/(non-commercial; etcher)

Video (including tv; check music also)
http://www.openshotvideo.com/ (non-commercial; OpenShot)
http://xmodulo.com/2014/02/watch-free-online-tv-linux.html (How to watch free online TV on Linux; 2/10/14)
http://www.zdnet.com/non-linear-video-editing-software-open-source-alternatives-to-abobe-premiere-pro-cc-7000027201/ (Non-linear video editing software: Open-source alternatives to Abobe Premiere Pro CC; 3/11/14)
http://www.tuxarena.com/intro/ref_mov.php (Movie Players for Linux; 3/25/14)
http://www.datamation.com/applications/best-linux-video-editors.html (Best Linux Video Editors; 10/26/15)
http://www.theregister.co.uk/2015/12/26/linux_video_editors/ (Feeling abandoned by Adobe? Check out the video editing suites for penguins; 12/26/15)
https://www.mozilla.org/en-US/firefox/hello/ (non-commercial; Firefox Hello)

Virtual Machines
http://www.cl.cam.ac.uk/Research/SRG/netos/xen/ (non-commercial; Xen)

Virtual Network Computing (VNC)
http://www.tightvnc.org/ (non-commercial; TightVNC)
http://www.tightvnc.com/ (non-commercial; TightVNC)
http://www.tightvnc.com/projector/ (commercial, but free; TightProjector)
http://www.kaboodle.org/ (non-commercial; Kaboodle)

Weather (see Satellite too)
http://www.unidata.ucar.edu/software/gempak/ (non-commercial; GEMPAK)
http://weather.unisys.com/wxp/ (non-commercial; WXP)
http://grads.iges.org/grads/ (non-commercail; GrADS)

Web Application Framework
http://www.adobe.com/products/flex/ (commercial & open source; [Adobe] Flex)

Web Analytic
http://piwik.org/ (non-commercial; Piwik)
http://opensource.com/business/14/10/top-3-open-source-alternatives-google-analytics (Top 3 open source alternatives to Google Analytics' 10/23/14)

Web Proxy
http://www.squid-cache.org/ (non-commercial; Squid)
http://www.squidguard.org/ (non-commercial; squidGuard, to be used with Squid)

Web Publishing
http://bluefish.openoffice.nl/ (non-commercial; bluefish)
http://quanta.sourceforge.net/ (non-commercial; Quanta Plus; KDE)
http://www.kompozer.net/ (non-commercial; Kompozer)
http://www.nvu.com/ (non-commercial; Nvu)
http://www.screem.org/ (non-commercial; SCREEM)
http://www.mamboserver.com/ (non-commercial; mambo)
http://www.w3.org/Amaya/ (non-commercial; Amaya)
http://ckeditor.com/ (non-commercial; CKEditor)
http://www.tinymce.com/index.php (non-commercial; TinyMCE; uses java)
https://towtruck.mozillalabs.com/ (non-commercial; TowTruck [Mozilla]; real-time collabration)
https://www.joomla.org/ (non-commercial; Joomla!)

Wiki
http://www.mediawiki.org/wiki/MediaWiki (non-commercial; MediaWiki)
http://www.tiddlywiki.com/ (non-commercial; TiddlyWiki)
http://doxwiki.sourceforge.net/ (non-commercial; doxWiki)
http://sourceforge.net/projects/stickwiki (non-commercial; Wiki on a Stick)

Window Emulator/Simulator/Virtualization
http://www.winehq.com/ (non-commercial; Wine)
http://dosbox.sourceforge.net/ (non-commercial; dosbox)
http://www.dosemu.org/ (non-commercial; dosemu)
http://fabrice.bellard.free.fr/qemu/ (non-commercial; QEMU)
http://bochs.sourceforge.net/ (non-commercial; Bochs)
http://www.codeweavers.com/ http://www.webweaver.nu/html-tips/custom-404.shtml(commercial; CrossOver Office)
http://win4lin.com (commercial; Win4Lin)
http://www.vmware.com/ (commercial; VMware)
http://www.parallels.com/ (commercial; Parallels)
http://www.aclerex.com/ (commercial; AclereX)

Window Manager (not desktop environment)
http://www.beryl-project.org/index.php (non-commercial; Beryl)
http://en.opensuse.org/Compiz (non-commercial; Compiz)
http://icculus.org/openbox/ (non-commercial; openbox)
http://fluxbox.org/ (non-commercial; FluxBox)
http://www.windowmaker.info/ (non-commercial; Window Maker)
http://www.icewm.org/ (non-commercial; iceWM)
http://www.gnu.org/software/screen/ (non-commercial; Screen)
http://awesome.naquadah.org/ (non-commercial; awesome)
http://box-look.org/ (themes for fluxflux, openbox, iceWM, etc)
http://xwinman.org/others.php (list)

Wireless
http://sourceforge.net/projects/ndiswrapper/ (non-commercial; NdisWrapper)
http://madwifi.org/ (non-commercial; MadWifi)
http://www.kismetwireless.net/ (non-commercial; Kismet)
http://www.linux-wlan.org/ (commercial, but open source)
http://blogs.techrepublic.com.com/10things/?p=873 (10 tools to connect to wireless networks in Linux; 7/14/09)
http://resources.zdnet.co.uk/articles/comment/0,1000002985,39714325,00.htm (Ten top wireless connection tools for Linux; 8/14/09)

Word Processor (and Spreadsheet)
http://www.libreoffice.org/ (non-commercial; LibreOffice)
http://www.abisource.com/ (non-commercial; AbiWord)
http://www.koffice.org/ (non-commercial; KOffice)
http://www.koffice.org/kword/ (non-commercial; KWord)
http://www.koffice.org/kspread/ (non-commercial; KSpread)
http://kile.sourceforge.net/ (non-commercial; Kile [LaTeX])
http://www.lyx.org/ (non-commercial; LyX)
http://go-oo.org/ (non-commercial; go-oo)
http://www.openoffice.org/ (non-commercial; OpenOffice)
http://ooextras.sourceforge.net/ (non-commercial; OpenOffice extras)
http://www.ooomacros.org/ (non-commercial; OpenOffice macros)
http://extensions.services.openoffice.org/project/clker_com (non-commercial; clker.com openoffice.org addon)
http://www.worldlabel.com/Pages/openoffice-template.htm (commercial but free templates; OpenOffice; Worldlabel.com)
http://sourceforge.net/projects/ooo-word-filter (non-commercial; filter for MS Word to read ODF)
http://libwpd.sourceforge.net/ (non-commercial filter; WordPerfect filter)
http://www.softmaker.com/english/tml_en.htm (commercial; TextMaker)

Word Processor (Web-based and/or Collaborative Editor)
https://abicollab.net/ (???; AbiChttps://www.openshot.org/ollab; based on AbiWord)
http://www.zohowriter.com (commercial, but free; Zoho Writer)
http://www.thinkfree.com (commercial, but free; ThinkFree)
http://docs.google.com/ (commercial, but free; Google Docs n Spreadsheets)
http://opensource.com/business/15/7/five-open-source-alternatives-google-docs (5 open source alternatives to Google Docs; 7/9/15)
http://oreports.com/ (commercial, but free; OpenReports)
http://www.fengoffice.com/web/ (commercial with free trial; Feng Office)
http://www.ajaxlaunch.com/ajaxwrite/ (commercial, but free; ajaxWrite)
http://www.picoscribe.com/html/picoWrite.html (commercial, but free; picoscribe; office suite)
http://www.live-documents.com/basics.html (commercial, but free; Live Documents)
http://www.cynapse.com/downloads/syncin-desktop-client (commercial; Sync.in)

Workspace
http://fluxspace.sourceforge.net/ (non-commercial; Fluxspace)

http://www.webweaver.nu/html-tips/custom-404.shtml X (Window Display)
http://conky.sourceforge.net/ (Conky used by OpenBox)
http://conky.sourceforge.net/ (non-commercial; conky)

Console Commands

General:

Introduction
http://www.ibm.com/developerworks/linux/library/l-lpic1-v3-103-1/index.html (Learn Linux, 101: The Linux command line; 8/25/09)
http://linux.org.mt/article/terminal
http://www.linuxcommand.org/
http://math.bu.edu/misc/DOCSERVER/raw/sh.pdf (unix)
http://www.unixguide.net/linux/linuxshortcuts.shtml
http://en.flossmanuals.net/gnulinux (FLOSS MANUALS)
http://www.computerworld.com/s/article/9202538/12_Commands_Every_Linux_Newbie_Should_Learn
http://h30565.www3.hp.com/t5/Feature-Articles/The-16-Linux-Shell-Commands-Every-Desktop-Linux-User-Should-Know/ba-p/3093 (The 16 Linux Shell Commands Every Desktop Linux User Should Know; 4/25/12)
http://mylinuxbook.com/linux-shell-environment/ (Linux Shell environment; 10/31/12)
http://www.techspot.com/guides/835-linux-command-line-basics/ (A Beginner's Guide to the Linux Command Line; 6/19/14)
http://linuxcommand.org/lc3_learning_the_shell.php (Learning the Shell)
http://www.tecmint.com/useful-linux-commands-for-newbies/ (Switching From Windows to Nix or a Newbie to Linux - 20 Useful Commands for Linux Newbies; 5/13/14)
http://www.tuxarena.com/intro/intro.php (Introduction to Linux and the Shell; 10/5/13)
http://www.tuxarena.com/intro/cmds.php (Chapter II: Useful General-Purpose Commands; 10/2/14)
https://www.maketecheasier.com/online-resources-for-learning-the-command-line/ (Top 3 Online Resources for Learning the Command Line (For Linux and OS X); 9/5/15)
https://www.guru99.com/unix-linux-tutorial.html (ILinux/Unix Tutorial for Beginners: Learn Online in 7 days; current)

Advanced
http://www.tldp.org/LDP/abs/html/ (Advanced Bash-Scripting Guide; 3/24/09)
http://www.er.uqam.ca/nobel/r10735/unixcomm.html (Some Useful Linux Commands; 2/02)
http://www.linuxuser.co.uk/tutorials/shell-scripting-for-system-administrators-beyond-the-basics/ (Shell scripting for system administrators: beyond the basics; 10/12/10)
http://www.linuxandlife.com/2013/04/some-tips-to-use-command-line-faster.html (Some tips to use the command line faster; 4/15/13)
http://www.tecmint.com/51-useful-lesser-known-commands-for-linux-users/ (51 Useful Lesser Known Commands for Linux Users; 12/13)
http://xmodulo.com/useful-cli-tools-linux-system-admins.html (What are useful CLI tools for Linux system admins; 8/15/14)
http://www.linuxnix.com/23-awesome-less-known-linuxunix-command-chaining-examples/ (25+ Awesome Linux/Unix command chaining examples; 7/26/12)

History
http://www.ibm.com/developerworks/linux/library/l-linux-shells/index.html?ca=drs- (Evolution of shells in Linux; 12/11)

References
http://www.pixelbeat.org/cmdline.html (Linux Commands - a practical reference; 1/7/08)
http://homepage.powerup.com.au/~squadron/(One Page Linux Manual; date???)
http://www.onlamp.com/linux/cmd/ (Linux in a Nutshell, 5th Edition; 2009)
http://www.linuxselfhelp.com/linuxterms.html (Linux terms, commands & programs; 2005)
http://www.ss64.com/bash/index.html (An A-Z Index of the Bash command line for Linux; date???)
http://www.archlug.org/linux-by-example/ (Linux by Example; date???)
http://linux.die.net/man/ (Linux man pages; no date)
http://searchenterpriselinux.techtarget.com/generic/0,295582,sid39_gci1282259,00.html (77 useful Linux commands and utilities; 12/3/07)
http://linux.die.net/Linux-CLI/doc-index.html (GNU/Linux Command-Line Tools Summary; no date)
http://www.linuxmanpages.com/ (linuxmanpages.com; date???)
http://amath.colorado.edu/computing/Workstations/commands.html (Other Basic Commands; unix; 1998)
http://www.laynetworks.com/linux.htm (UNIX / Linux Command Summary ; 2008)
http://www.reallylinux.com/docs/basic.shtml (Basic Linux Commands; 2009)
http://alinuxblog.wordpress.com/2008/08/23/10-must-have-linux-not-only-cheat-sheet/ (list; 10 must-have Linux (and not only) cheat-sheets; 8/23/08)
http://tldp.org/LDP/GNU-Linux-Tools-Summary/html/index.html (GNU/Linux Command-Line Tools Summary; 4/15/06)
http://www.junauza.com/2009/08/10-essential-unixlinux-command-cheat.html (10 Essential UNIX/Linux Command Cheat Sheets; list; 8/09?)
http://www.cyberciti.biz/tips/linux-unix-commands-cheat-sheets.html (Top 10 Best Cheat Sheets and Tutorials for Linux / UNIX Commands; 6/17/09)
http://www.cemdesign.co.uk/blog/post.php?s=2012-07-10-unix-commands-cheat-sheet (Unix Commands Cheat Sheet)
http://www.efytimes.com/e1/fullnews.asp?edid=113848 (Important Shortcuts For Linux Beginners; 8/21/13)
http://www.everydaylinuxuser.com/2013/09/our-favourite-linux-cheat-sheets.html (Our Favourite Linux Cheat Sheets; 9/13)
http://mywiki.wooledge.org/BashFAQ (BASH Frequently Asked Questions)
http://mywiki.wooledge.org/BashGuide (BashGuide)
http://xmodulo.com/2014/07/access-linux-command-cheat-sheets-command-line.html (How to access Linux command cheat sheets from the command line; 7/28/14)
https://www.networkworld.com/article/3268964/how-to-do-math-on-the-linux-command-line.html (How to do math on the Linux command line; 4/17/18)

Misc.
http://mylinuxbook.com/funny-side-of-linux-command-line/ (The funny side of Linux command line; 4/15/13)
http://mylinuxbook.com/funny-and-interesting-linux-commands-part-ii/ (Funny And Interesting Linux Commands – Part II; 5/8/13)
http://www.binarytides.com/linux-fun-commands/ (20 amusing Linux commands to have fun with the terminal; 3/14/14)
http://www.blackmoreops.com/2014/09/18/connect-to-wifi-network-from-command-line-in-linux/ (Connect to WiFi network from command line in Linux; 9/18/14)

Scripts
http://www.freeos.com/guides/lsst/ (Linux Shell Scripting Tutorial; 2002)
http://linux.dbw.org/shellscript_howto.html (How to write a shell script; date???)
http://www.dreamsyssoft.com/shell_prog.jsp (UNIX Shell Scripting Tutorial; date???)
http://www.shellcheck.net/ (shellcheck.net)
http://www.linuxandlife.com/2013/07/how-to-write-scripts-tip-internal-vs.html (Tip to write scripts: Internal vs External commands; 7/15/13)
Various Utilities
http://www.cyberciti.biz/open-source/best-terminal-applications-for-linux-unix-macosx/ (15 Greatest Open Source Terminal Applications Of 2012;1/7/13)
http://xmodulo.com/2014/03/geographic-location-ip-address-command-line.html (How to look up the geographic location of an IP address from the command line; 3/13/14)

Specific: (Also check information from man and info, i.e., "man ls" and "info ls")

apt-get (include clean)
http://www.debian.org/doc/manuals/apt-howto/ch-apt-get.en.html

bc (terminal calculator)
http://xmodulo.com/command-line-calculator-linux.html (What is a good command-line calculator on Linux; 10/21/14)

chkrootkit
http://www.chkrootkit.org/

cpu*
http://ask.xmodulo.com/check-cpu-info-linux.html (How to check CPU info on Linux;12/24/14)

emacs
http://www.gnu.org/software/emacs/
http://www.junauza.com/2009/09/quick-and-subtle-introduction-to-emacs.html (A Quick and Subtle Introduction to Emacs; 9/09)
http://rinari.rubyforge.org/ (add-on: Rinari for Ruby on Rail)

find
http://www.binarytides.com/linux-find-command-examples/ (25+ examples of Linux find command – search files from command line; 8/12/13)

free
http://www.tecmint.com/check-memory-usage-in-linux/ (10 'free' Commands to Check Memory Usage in Linux; 12/4/15)

ftp
http://davelozinski.com/tutorials/ftp/index.php?1367269030663 (The Basics of FTP)

fstab
http://www.tuxfiles.org/linuxhelp/fstab.html (tuxfiles:linuxhelp)

gzip
http://www.gzip.org/
http://www.linuxnix.com/7-linuxunix-gzip-and-gunzip-command-examples/ (7 Linux/Unix gzip and gunzip command examples; 5/25/14)

kill (including pkill & killall)
http://www.tecmint.com/how-to-kill-a-process-in-linux/ (A Guide to Kill, Pkill and Killall Commands to Terminate a Process in Linux; 9/19/13)

http://freshmeat.net/projects/keep/

make
http://www.gnu.org/software/make/manual/make.html

lshw
http://ezix.org/project/wiki/HardwareLiSter

ping
http://ftp.arl.mil/~mike/ping.html

rpm
http://bobcares.com/article45.html (RPM basics)

rpmfind/rpm2html
http://rpmfind.net/

sed
http://www.grymoire.com/Unix/Sed.html (Sed - An Introduction and Tutorial)
http://en.wikipedia.org/wiki/Sed (Wikipedia - sed)
http://www.panix.com/~elflord/unix/sed.html
http://www.cornerstonemag.com/sed/ (sed . . . the stream editor)
http://www.gnu.org/software/sed/manual/ (sed, a stream editor)

sysrq
http://www.makeuseof.com/tag/fix-unresponsive-or-frozen-computers-with-keyboard-shortcuts/ (Fix Unresposive or Frozen Linux Computers ...)

systemd
http://linoxide.com/linux-command/systemd-vs-sysvinit-cheatsheet/ (Colourful ! systemd vs sysVinit Linux Cheatsheet; 9/5/14)
http://n0where.net/understanding-systemd/ (Understanding Systemd; 6/15)
https://www.maketecheasier.com/systemd-what-you-need-to-know-linux/ (Systemd - What You Need to Know; 7/11/15)
http://without-systemd.org/wiki/index.php/Main_Page> (wiki)

su + sudo
http://lifehacker.com/make-sudo-sessions-last-longer-in-linux-1221545774 (Make Sudo Sessions Last Longer in Linux; 8/29/13)
http://www.tecmint.com/su-vs-sudo-and-how-to-configure-sudo-in-linux/ (Difference Between su and sudo and How to Configure sudo in Linux; 3/19/14)

tar
http://www.gnu.org/software/tar/tar.html
http://rholbert.colug.net/pdf/tar.pdf
http://www.nextstep4it.com/categories/unix-command/archive/ (Linux/Unix tar Command with Practical Examples; 4/2/13)
http://www.binarytides.com/linux-tar-command/ (10 quick tar command examples to create/extract archives in Linux; 2/23/15)

tty
http://www.linuxdevices.com/articles/AT5727959130.html (The tty Layer; 8/1/02)

x
http://www.x.org/

urpmi
http://easyurpmi.zarb.org/

useradd
http://www.tecmint.com/add-users-in-linux/ (The Complete Guide to "useradd" Command in Linux - 15 Practical Examples; 3/28/14)

vi & vim
http://www.vim.org/
http://www.viemu.com/a_vi_vim_graphical_cheat_sheet_tutorial.html (Graphical vi-vim Cheat Sheet and Tutorial; 2008)
http://www.linuxconfig.org/Vim_Tutorial (Vim Tutorial; 2009)
http://simpletutorials.com/vim/index.php (Overcoming Basic VIM Frustrations; date???)
http://www.rru.com/~meo/useful/vi/vi.intro.html (VI (and Clone) Introductory Guide; 12/12/98)
http://www.rru.com/~meo/useful/vi/vi.rm.html (VI (and Clone) Editor Reference Manual; 12/12/98)
http://ldn.linuxfoundation.org/article/vim-101-a-beginners-guide-vim (Vim 101: A Beginner's Guide to Vim; 11/20/09)
http://www.linux.com/learn/tutorials/243002-vim-201-an-intermediate-guide-to-vim (Vim 201: An Intermediate Guide to Vim; 11/25/09)
https://www.ibm.com/developerworks/mydeveloperworks/blogs/58e72888-6340-46ac-b488-d31aa4058e9c/entry/linux_vim_editor31?lang=en (Linux vim editor; 10/6/12)
http://tuts.pinehead.tv/2012/10/31/vi-short-cuts-for-beginners/ (VI Shortcuts & Commands For Newbies; 10/31/12)
http://csswizardry.com/2014/06/vim-for-people-who-think-things-like-vim-are-weird-and-hard/ (Vim for people who think things like Vim are weird and hard; 6/23/14)
http://xmodulo.com/useful-vim-commands.html (What are some obscure but useful Vim commands; 11/7/14)
http://www.ibm.com/developerworks/linux/library/l-lpic1-103-8/index.html?ca=drs- (Learn Linux, 101: File editing with vi; 1/4/16)
http://michael.peopleofhonoronly.com/vim/ (Vim Cheat Sheat for Programmers)
https://www.rosehosting.com/blog/vim-tips-and-tricks/ (Vim tips and tricks that you probably never heard of; 10/14/16)

wget
https://www.gnu.org/software/wget/manual/wget.html (GNU Wget 1.15 Manual)

Distributions

General
http://distrowatch.com/ -> major distributions
https://www.distroshare.com/ (DistroShare)
http://www.gooplusplus.com/xsubmenu.php?linux (directory of linux distros)
http://www.gnu.org/distros/free-distros.en.html (Free GNU/Linux distributions)
http://www.tuxradar.com/content/how-choose-best-linux-distro (How to choose the best Linux distro for you; 4/29/09)
http://en.wikipedia.org/wiki/Comparison_of_Linux_distributions (Comparison of Linux distributions)
http://en.wikipedia.org/wiki/List_of_Linux_distributions (List of Linux distributions)
http://www.livecdlist.com/ (The LiveCD List [try a liveCD])
http://www.zegeniestudios.net/ldc/index.php (Linux Distribution Chooser; updated 4/17/09))
http://desktoplinuxathome.com/distro.html(What Linux distribution should you try?; 6/28/09)
http://www.tuxs.org/chooser/ (Linux Distribution Chooser 0.3; date???)
http://polishlinux.org/choose/ (Choose OS; 8/13/05)
http://www.linuxforums.org/reviews/overview_of_the_ten_major_linux_distributions.html (Overview of the ten major Linux distributions; 4/1/06)
http://linux-blog.org/how-to-choose-the-right-distribution-of-linux/ (How-To Choose the Right Distribution of Linux; 11/17/11)
http://www.tuxradar.com/content/distro-picker-0 (Linux Distro Picker; 4/25/13)
http://www.everydaylinuxuser.com/2014/02/analysis-of-top-10-linux-operating.html (Analysis of the top 10 Linux operating systems; 2/8/14)
https://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Distribution_Timeline.svg (Linux Distribution Timeline)

Make your own
http://www.instalinux.com/cgi-bin/coe_bootimage.cgi (InstallLinux; date???)

Specifics:

ArkOS (Raspberry Pi; privacy)
https://arkos.io/ (Main Site)

ArchBang (Arch Linux w/ Openbox
http://archbang.org/ (Main Site)

Arch Linux [fast, lightweight, console]
http://www.archlinux.org/ (Main Site)

Arch Linux ARM
http://archlinuxarm.org/ (Main Site)

Browser Linux
http://www.browserlinux.com/ (Main Site)

Bunsen Linux (continuation of #!)
https://www.bunsenlabs.org/ (Main Site)
CrunchBang (Debian w/ OpenBox; discontinued)
http://crunchbang.org/ (Main Site)
http://crunchbanglinux.org/ (CrunchBang stuffs)
http://crunchbang.org/wiki/ (Wiki)
http://crunchbanglinux.org/forums/ (forums)
http://mehall.co.cc/beginners.html (Beginner's Guide to Linux/#!)
http://www.willsimpson.org/temp/crunchbang.html (#! linux desktop guide)
http://ostatic.com/blog/crunchbang-beautiful-minimalism (review: Crunchbang - Beautiful Minimalism; 8/22/13)
https://crunchbangplusplus.org/ (!#++; sucessor to !#)

Damn Small Linux [small; FluxBox; debian-based]
http://www.damnsmalllinux.org/ (Main Site)

Debian
http://www.debian.org (Main Site)
http://www.debian.org/doc/ (Docs)
http://www.togaware.com/linux/survivor/ (Docs Online & Book)
http://www.debianhelp.co.uk/ (Docs)
http://dotdeb.org/ (Dotdeb; unofficial repository)
http://www.apt-get.org/ (Unofficial APT repositories)
http://people.debian.org/~debacle/refcard/ (Reference Card)

DeLi(cate) (old computer)
http://delicate-linux.net/ (Main Site)

DoudouLinux (children)
http://www.doudoulinux.org/web/english/

Easy Peasy
http://www.geteasypeasy.com/ (Main Site)

Emmabuntus
http://emmabuntus.sourceforge.net/ (Main Site)
http://emmabuntus.sourceforge.net/forum/ (forum; French)
http://emmabuntus.sourceforge.net/mediawiki/index.php/Emmabuntus:Community_portal (wiki)
http://emmabuntus.sourceforge.net/blog/ (blog; mostly French)
https://en.wikipedia.org/wiki/Emmabunt%C3%BCs (wiki)

Fedora
http://fedoraproject.org/ (Main Site)
http://linuxpoison.blogspot.com/2008/11/multimedia-support-in-fedora-10.html (Complete Dose of Linux Poison; multimedia)
http://rpmfusion.org/ (RPM Fusion: extras for Fedora)
http://www.my-guides.net/en/content/view/174/26/ (myguide.net; docs for various versions)
http://www.tuxradar.com/content/newbies-guide-fedora-12 (docs)
http://www.fedora-netbook.com/ (fedora-netbook)
http://www.unixmen.com/fedora-17-install-codecs-drivers-and-fonts-in-under-5-minutes/ (Fedora 17 – Install Codecs, Drivers and Fonts in under 5 minutes!; 5/31/12)
http://www.unixmen.com/201206-how-to-install-flash-player-on-fedora/ (How to install Flash player on Fedora 17; 6/11/12)

Foresight Linux
http://www.foresightlinux.com/ (Main Site)
http://www.foresightlinux.org/kids.html (kids)

Fuduntu
(Main Site)

GeckoLinux
https://geckolinux.github.io/ (Main Site)

gNewSense [fully free]
http://www.gnewsense.org/ (Main Site)

gOS
http://www.thinkgos.com/ (Main Site)

Ichthux
http://www.ichthux.com/ (distro: Ichthux)
http://alioth.debian.org/projects/ichthux/ (Ichthux distro)

Knoppix
http://www.knoppix.org/ (Main Site)
http://www.knoppix.net/ (wiki)
http://www.extremetech.com/article2/0,1697,1918391,00.asp (Fixing Windows with Knoppix; 2/2/06)
http://www.extremetech.com/article2/0,1697,1928189,00.asp (Fixing Linux with Knoppix; 2/17/09)

http://xmodulo.com/2014/03/geographic-location-ip-address-command-line.html Leenux
http://www.leeenux-linux.com/ (Main Site)

Linux Console
http://www.linuxconsole.org/ (Main Site)

Linux from scratch
http://www.linuxfromscratch.org/

Linux Lite
https://www.linuxliteos.com/betamanual/ (LL Help Manual)

Linux Mint
http://linuxmint.com/ (Main Site)
http://segfault.linuxmint.com/ (Linux Mint Blogs)
http://www.howtoforge.com/the-perfect-desktop-linux-mint-9-isadora (Docs for Linux Mint 9)
http://community.linuxmint.com/tutorial/view/96 (Fluxbox menu; personal)
http://linuxbsdos.com/ask/2011/08/change-screen-resolution-on-linux-mint-11-lxde/ (Change Screen Resolution on Linux Mint 11 LXDE; 8/16/11)
http://community.linuxmint.com/tutorial/view/101 (How to enable your Floppy driver; 2010)
http://douwil7.100webspace.net/linux/Tuning%20LXDE.html (A Beginners Guide To Setting Up Linux Mint LXDE, The Lightweight Champion)
http://www.howtoforge.com/introduction-to-the-linux-mint-cinnamon-desktop (Introduction To The Linux Mint Cinnamon Desktop; 2/19/12)
http://www.linuxbsdos.com/2012/04/25/manual-disk-partitioning-guide-for-linux-mint-debian/ (Manual disk partitioning guide for Linux Mint Debian; 4/25/12)
http://www.noobslab.com/2012/06/install-skype-40-in-ubuntulinux-mint.html (Install Skype 4.0 in Ubuntu/Linux Mint (New Release); 5/12)
http://www.zdnet.com/six-clicks-linux-mint-tips-and-tricks-7000028551/ (Six Clicks: Linux Mint tips and tricks; 4/17/14)
http://trymint.org/ (TryMint)
https://sites.google.com/site/easylinuxtipsproject/first-mint-xfce (10 things to do first in Linux Mint 18.1 Xfce)
https://community.linuxmint.com/idea/welcome (LM Community)
http://segfault.linuxmint.com/ (LM News)

Mageia
http://www.mageia.org/en/ (Main Site)
https://forums.mageia.org/en/ (Forums)

Mandriva (was Mandrake)
http://www.mandriva.com/ (MainSite)
http://forum.mandriva.com/ (Forums)
http://www.mandriva.com/en/support (Support)
http://store.mandriva.com/ (Store)
http://mandrivausers.org/?act=idx (Forums)
http://www.mandrake.tips.4.free.fr/ (Docs)
http://www.jennings.homelinux.net/ (Docs)

mbed OS
http://mbed.org/ (Main Site)

MeeGo
https://meego.com/ (Main Site)

Mepis
http://www.mepis.org/ (Main Site)
http://www.mepislovers.org/forums/index.php (Forums)
http://www.mepisguides.com/ (Guides)
http://www.mepis.org/forum (Forums)

MiniMe (mini PCLinuxOS)
http://www.pclinuxos.com (search for MiniMe)

NanoLinux
http://sourceforge.net/projects/nanolinux/ (Main Page)

Nosonja (simple Arch)
http://nosonja.org/ (main site)

PCLinuxOS
http://www.pclinuxos.com/ (Main Site)
http://www.pclinuxos.com/ -> support -> wiki (Wiki)
http://www.pclinuxos.com/ -> forums/ (Forums)
http://www.pclinuxoshwdb.com/ (Hardware Database)
http://www.pclosmag.com/ (PCLinuxOS magazine)
http://www.mypclinuxos.com/ (News)
http://www.pclinuxonline.com/

PC/OS (Ubuntu w/ fully loaded XFCE)
http://www.pc-os.org/ (Main Site)

PiBang (Crunchbang on Pi [ARM])
http://www.pibanglinux.org/ (Main Site)

http://xmodulo.com/command-line-calculator-linux.html Porteus-kiosk
http://porteus-kiosk.org/index.html (Main Site)

Puppy Linux [small; iceWM]
http://puppylinux.org/main/index.php (Main Site)
http://www.murga-linux.com/puppy/index.php (Forums)

Qimo (for kids)
http://www.qimo4kids.com/ (Main site)

QubeOS (privacy)
https://www.qubes-os.org/ (Main site)

Sabayon Linux
http://www.sabayonlinux.org/

Scientific Linux (SL) [scientific tools]
https://www.scientificlinux.org/

Security-Enhanced Linux
http://www.nsa.gov/research/selinux/index.shtml (Home Page)

Sidux
http://sidux.com/ (Main Site)

Slackware
http://www.slackbook.org/ (Docs)

SuSe (Novell)
http://www.novell.com/linux/suse/ (MainSite)
http://www.opensuse.org/Welcome_to_openSUSE.org (openSUSE)

Tails (The Amnesic Incognito Live System; privacy distro)
https://tails.boum.org/ (MainSite)

TinyMe (mini-PCLinuxOS)
http://tinymelinux.com/doku.php (main site)

Xandros
http://www.xandros.com/ (Main Site)
http://forums.xandros.com/ (Forums)
http://xandros.jammys.net/ (Docs)
http://en.wikibooks.org/wiki/Using_Xandros (wiki book)
http://wiki.linuxquestions.org/wiki/Xandros (wiki book)
http://www.geekconnection.org/ (is/was ??? xandros resources)

Ubuntu
http://www.ubuntulinux.org/ (Main Site)
http://www.ubuntuforums.org/ (Forums)
http://www.linuxaria.com/article/ubuntu-launchpad-ppa?lang=en (Ubuntu, Launchpad and PPA; 11/16/10)

Vector
http://beginlinux.com/desktop_training/159-vector-linux/1367-course-vector-linux (Course: Vector Linux)

WOW! (senior) http://www.mywowcomputer.com/ (linux software & hardware for seniors)

Yoper
http://www.yoper.com/ (Main Site)

Zenwalk Linux! [successor of Minislack]
http://zenwalk.org/ (Main Site)

ZevenOS
http://www.zevenos.com/ (Main Site)

Retailers

Buy places
https://www.osdisc.com/index.html (commercial; OSDisc.com; Linux/BSD/Solaris iso + books)
http://www.geeks.com (commercial; Geeks; hardware/media; not linux-specific)
http://www.tigerdirect.com/ (commercial; Tiger Direct; hardware; not linux-specific)
http://www.meritline.com/ (commercial; Meritline; hardware/media; not linux-specific)
http://www.alwaysinnovating.com/home/index.htm (commercial; Always Innovating; hardware/miniature; not linux-specific)

Linux pre-installed vendors (desktops, servers, laptops, tablets)
http://lxer.com/module/db/index.php?dbn=14 (listing)
http://linuxpreloaded.com/ (listing)
https://puri.sm/ (commercial; Purism; qubeos preinstalled; laptop; privacy)
http://www.blacklablinux.org/p/pre-installed-systems.html (non-commercial; Black Lab pre-installed)
http://www.opensensesolutions.com/ (commercial; Open Sense Solutions; public [library] desktop, consultant)
http://www.laclinux.com/en/Start (commercial; Los Alamos Computers; high-end workstation and laptop)
http://eracks.com -> desktops (ommercial; eRacks; server, desktop, laptop)
http://symplepc.com/ (commercial; Symple PC; desktop)
http://www.ibexpc.com/linuxsystems.html (commercial; IBEXPC; desktop, workstation)
http://www.linuxcomputersystems.com/ (commercial: Linux Computer Systems; server, workstation)
http://www.system76.com/ (commercial; system76; server, desktop, laptop)
http://www.amnet-comp.com/ (commercial; Amnet Computers; server, workstation)
http://www.asaservers.com/ (commercial; ASA Computers; server)
http://www.aslab.com/ (commercial; ASL; server, workstation)
http://www.emperorlinux.com/ (commercial; Emperor Linux; high-end laptop)
http://www.gamepc.com/ (commercial; Game PC; high-end server, desktop, laptop)
http://groovix.com/store/ (commercial; groovix/open sense solutions; public [library] desktop, consultant)
http://www.linuxcertified.com/ (commercial; Linux Certified; laptop, service)
http://www.linuxloft.com/ (commercial; Linux Loft; service)
http://www.swt.com/ (commercial; SW Technology; server, desktop, laptop)
http://www.pogolinux.com/ (commercial; pogo linux; server, workstation)
http://www.pricepc.com/ (commercial; pricepc.com; server, desktop)
http://www.scronline.com/ (commercial; SCR online; service)
http://www.alvio.com/default.aspx (commercial; Alvio)
http://cosmoseng.com/ (commercial; Cosmos Engineering; desktop, laptop, service)
http://www.zonbu.com/home/index.htm (commercial; Zonbu; desktop; 15W, $99 + 2 years subscription)
http://www.fit-pc.com/ (commercial; fit-pc; mini-desktop)
http://www.devonit.com/ (commercial; Devon IT; server, software)
http://www.norhtec.com/ (commercial; NorhTec; mostly servers + a desktop and a netbook)
http://www.ink-media.com/index.html (commercial; ink-media; netbook)
http://www.zareason.com/shop/home.php (commercial; zareason; server, desktop, laptop)
http://us.shuttle.com/ (commercial: Shuttle; desktop)
http://www.thelinuxlaptop.com/ (commercial; The Linux Laptop; laptop)
http://www.thebookpc.com/ (commercial: BookPC; mini-desktop)
http://www.linutop.com (commercial: Linutopq; mini-desktop)
http://www.limepc.com/index.shtml (commercial: LimePC; server, desktop, tablet)
http://store.viatech.com/protected/index.action (VIA Technologies; server, mini-PC)
http://www.picopc.co.uk/ (commercial; Sharp & Tappin Technology Ltd; PicoPC; mini-desktop)
http://linpc.us/ (commercial: LinPC; desktop, laptop)
http://www.thinkpenguin.com/ (commercial: Think Penguin; desktop, laptop)
http://www.eightvirtues.com/ (commercial: Eight Virtues; desktop)
http://trimslice.com/web/ (commercial; Trim-Slice; mini-computers)
http://utilite-computer.com/web/home (commercial; Utilite; mini-computers)
http://www.toysrus.com/shop/index.jsp?categoryId=12807709&camp=redirect:redirect:TRU:tabeo:80212 (commercial; tabeo; kid-friendly tablet)
http://makeplaylive.com/ (commercial: makeplaylive.com; Vivaldis [KDE] tablet)
http://www.linuxmint.com/store_computers.php (commercial: Think Penquin; Linux Mint desktop & notebook)
https://compulab.co.il/ (commercial; CompuLab; mini-PC)
http://www.solid-run.com/ (commercial; CuBox; mini-PC)
http://www.gigabyte.com/MicroSite/342/haswell.html(commercial; GIGABYTE; DIY)
http://cubox-i.com/ (commercial; CuBox-i; pre-sale as of 10/30/13)
http://www.aplex.com.tw/en/home.php (commercial; APLEX Technology; box PC, tablet, embedded system [ includes window OS])
http://www.compactpc.com.tw/en/index.html (commercial; DMP Electronics Inc.; embedded)
http://www.aaeon.com/en/ (commercial; AAEON Technology, Inc.; embedded + others)
http://multitouch.com/ (commercial; PQ Labs; Multi-Touch Screens)
http://entegratec.com/ (commercial; entegra technologies, inc.; tablet)
http://www.aaeon.com/en/ (commercial; AAEON Technology, Inc; tablet, embeddee)
https://shop.libiquity.com/ (commercial: Libiquity; "FSF" laptop)
https://www.pine64.org/?page_id=3707 (commercial: Pinebook; laptop)
https://alpha.store/ (commercial: Alpha; laptop, mini-desktop)
https://endlessos.com/home/ (commercial: Endless Computers; mini-desktop)
http://www.psychsoftpc.com/ (commercial: Psychsoftpc)
http://www.linux-netbook.com/netbooks (list of linux netbooks)
See netbook (at the bottom) for more

Netbook (mostly ASUS eee laptop)
http://www.eeeuser.com/ (ASUS eee "directory")
http://forum.eeeuser.com/ (eee forum)
http://wiki.eeeuser.com/ (eee wiki)
http://vip.asus.com/login.aspx (register)
http://event.asus.com/eeepc/comparison/eeepc_comparison.htm eee model comparasion table)
http://sourceforge.net/projects/eee-applet (eee applet; ACPI)
http://www.allasus.com/CATALOG/ (commercial; StarTech; search for asus eee; retailer)
http://www.newegg.com/ (commercial; NewEgg.com; search for asus eee; retailer)
http://www.microcenter.com/> (commercial; MicroCenter; search for eeel retailer)
http://directron.com/ (commercial; Directron.com; search for asus eee; retailer)
http://www.jr.com (commercial; J&R; search for asus eee; retailer)
http://milwaukeepc.com (commercial; Milwaukee PC; search for asus eee; retailer)
http://www.costco.com (commercial; Costco; search for asus eee; retailer)
http://www.mobileplanet.com/ (commercial; mobileplanet; search for asus eee; retailer)
http://crucial.com/store/listparts.aspx?model=Eee%20PC%20701 (commercial; crucil; upgrade memory)
TARGET="_blank"> http://www.everydaylinuxuser.com/2013/10/12-great-linux-operating-systems-for.html ( 12 great Linux operating systems for netbooks; 12/20/12)

Cheap mini-size linux computers
http://www.ovalelephant.com/p-2062-mini-pc-android-linux-linaro-a10-chip-1gb-ddr3-ram (Mini PC Android/Linux(Linaro) A10 Chip 1GB DDR3 RAM (Oval Elephant))
http://www.theverge.com/2012/5/22/3036745/via-apc-android-computer-announced (Via's APC, a $49 Android desktop computer, goes on sale this summer; sorry no VIA's link as of 8/4/12)
http://liliputing.com/2012/07/mini-x-tv-box-runs-android-linux-for-under-100.html (Mini X TV Box runs Android, Linux for under $100; if you want this, hunt for it)
http://liliputing.com/2012/07/linux-distributions-that-can-run-on-an-mk802-mini-pc.html (Linux distributions that can run on an MK802 Mini PC)
https://www.miniand.com/products/Hackberry%20A10%20Developer%20Board#buy (Hackberry A10 Developer Board)
https://www.miniand.com/products/Hackberry%20A10%20Developer%20Board (Hackberry A10 Developer Board)
http://apc.io (APC; android PC)
http://liliputing.com/2012/08/great-wall-u310-packs-an-ubuntu-desktop-pc-into-a-keyboard.html (Great Wall U310)
http://cubieboard.org/ (commercial; Cubieboard)
http://www.pengpod.com/ (commercial; PengPod; tablets & mini-PCs)
http://www.aaeonusa.com/products/details/?item_id=1757 (commercial; AAEON; AEC-6401 price?)

Tablets
http://opensource.com/life/10/4/five-open-source-alternatives-ipad (Five open source alternatives to the iPad; 4/4/10)
http://www.engadget.com/2010/04/06/icds-tegra-2-powered-gemini-is-the-most-feature-complete-tablet/ (CD's Tegra 2-powered Gemini is the most feature-complete tablet we've seen yet; 4/6/10)
http://www.pengpod.com/ (commercial; PengPod; tablets & mini-PCs)

Other linux-related stuffs

Christianity
http://www.bibletime.info (non-commercial; BibleTime; bible program)
http://xiphos.org/ (non-commercial; Xiphos [was GNOMESword]; bible program)
http://www.crosswire.org/sword/index.jsp (modules for BibleTime & Xiphos - forget Sword, a window program)
(non-commercial; BPBible)
http://www.linuxforchristians.org/ (news + blogs + other links)
http://cs.uninetsolutions.com/ (ChristianSource and Linux for Christians; mailing list)
http://willem.engen.nl/biblelinks.php (Bible links)
http://pbible.sourceforge.net/ (non-commercial; GTK-PERL BIBLE)
http://biblememorizer.sourceforge.net/index.html (non-commercial; BibleMemorizer)
http://www.adebenham.com/lyricue/
http://www.ebible.com/ (commercial; eBible; free ad supported & paid non-ad; mobile bible program)
http://www.crosswire.org/bibledesktop/ (non-commercial; Bible Desktop)
http://www.crosswire.org/wiki/Frontends:Diatheke (non-commercial; Diatheke; CLI bible)
http://sites.google.com/site/bibledit/home (non-commercial; Bibledit)
http://chaddb.sourceforge.net/ (CHADDB [Database])
http://www.churchdb.org/ (ChurchInfo [Database])
http://healyourchurchwebsite.com/ (Heal Your Church Website; 6/17/11)
http://www.olivetree.com/ (Olive Tree; mobile bible)
http://www.kjv1611.mobi/index.html (KJV mobile bible)
http://blog.eracc.com/2010/12/08/linux-tux-goes-to-church/ (12/8/10)
http://openlp.org/ (non-commercial; OpenLP [projector software])
http://www.mennonite.net/Caravel (non-commercial; Caravel [Content Management])

Email
https://www.rosehosting.com/blog/check-if-an-email-exists/ (How to check if an email address really exists; 8/26/16)
Email Server
http://www.linuxwaves.com/

Logos
http://www.isc.tamu.edu/~lewing/linux/ (Linux 2.0 Penguins)

Mac (runs linux)
http://www.maconlinux.org/ (non-commercial; Mac-on-Linux)

Searching
http://software.twotoasts.de/index.php?/pages/catfish_summary.html (non-commercial; Catfish; file search)

Smartwatch
https://asteroidos.org/ (non-commercial; AsteroidOS)

Software Repository
http://www.gnu.org/software/software.html
http://freshmeat.net/
http://sourceforge.net/
http://www.icewalkers.com/
http://kde-apps.org/ (KDE)
http://www.kde-look.org/ (KDE)
http://gnomefiles.org/ (GNOME)
http://www.rpmseek.com/index.html (rpm & deb files)
https://github.com/ (GitHub)
http://www.ibiblio.org/pub/linux/
http://autopackage.org (Autopackage)
http://www.linuxsoftware.org/ (Linux Software)
http://directory.fsf.org/ (FSF/UNESCO Free Software Directory)
http://freshrpms.net/ (freshrpms.net)
http://linuxappfinder.com/ (Linux App Finder)
http://www.linux.org/apps/

Web Hosting
http://www.tuxfamily.org/ (free; TuxFamily)

Window (runs linux)
http://www.colinux.org/ (non-commercial; Cooperative Linux)

Vision
http://www.linux-foundation.org/en/Linux_Platform_Weather_Forecast (Linux Weather Forecast)

Programming

General
http://www.advancedlinuxprogramming.com/ (Advanced Linux Programming; download)
http://www.programmersheaven.com
http://www.infoworld.com/d/application-development/10-programming-languages-could-shake-it-181548 (10 programming languages that could shake up IT; 1/3/12)
http://www.alice.org/ (Alice; innovative 3D programming environment)
http://www.codecademy.com (Codecademy)
http://runrev.com/ (LiveCode; beginner programming)
http://www.echoecho.com/index.html (various programming languages)
https://c9.io/ (commercial; Cloud9 IDE; collabarative coding)
http://www.codecademy.com/ (code academy; HTML & CSS, Javascript, jQuery, Python, Ruby, PHP)
https://simpletutorials.com/Home/Index (Simple Tutorials; HTML & CSS, Javascript, VIM, Python, etc)
http://safestars.org/code-review-a-beginners-guide-to-computer-programming-and-web-development/ (Code Review: A Beginner's Guide to Computer Programming and Web Development)

Apache
http://www.apache.org/ (Main Site)
http://hub.webring.org/hub/apachesupport (Apache CookbookMain Site)
http://httpd.apache.org/docs/2.0/howto/ (docs)

BASIC
http://www.maxreason.com/software/xbasic/xbasic.html (non-commercial; XBasic)
http://www.kbasic.org/ (commercial, but free Personal Edition; KBASIC)
http://www.janus-software.com/phoenix_features.html (commercial; Phoenix)
http://www.realsoftware.com/ (commercial; REALbasic)

Blog
http://www.theitstuff.com/how-to-host-blog-or-website-with-wordpress (How To Host Your Own Blog Or Website With WordPress; 12/5/15)

C
http://gcc.gnu.org/ (gcc Main Site)
http://www.mingw.org/ (minGW main site; cross-platform)
http://www.freeprogrammingresources.com/ctutor.html
http://www.cs.cf.ac.uk/Dave/C/
http://anjuta.sourceforge.net/ (non-commercial; Anjuta; C/C++ editor)
http://www.cs.virginia.edu/~lcc-win32/ (lcc-win32 for window OS)
http://www.openwatcom.org/index.php/Main_Page (non-commercial; Open Watcom)
http://elevenislouder.posterous.com/pages/introduction-to-c (Introduction to C)

C++
http://www.freeprogrammingresources.com/ctutor.html
http://www.gnacademy.org/text/cc/
http://anjuta.sourceforge.net/ (non-commercial; Anjuta; C/C++ editor)
http://www.openwatcom.org/index.php/Main_Page (non-commercial; Open Watcom)
https://www.ossblog.org/master-c-programming-with-open-source-books (Master C++ Programming with Free Open-Source Books; 2/16/17)

FORTRAN (including 77/90/95)
http://www.gnu.org/software/fortran/fortran.html (GFortran)
http://gcc.gnu.org/onlinedocs/gcc-3.4.1/g77 (g77)
http://people.msoe.edu/~tritt/f77lang.html (Fortran 77 Notes)
http://www.star.le.ac.uk/~cgp/prof77.html (Professional Programmer's Guide to Fortran77)
http://www.nikhef.nl/~templon/fortran.html (Information about running Fortran codes under Linux)
http://www.thefreecountry.com/compilers/fortran.shtml (Free Fortran Compilers)
http://www.eclipse.org/photran/index.php (non-commercial; Photran - An Integrated Development Environment for Fortran)
http://www.openwatcom.org/index.php/Main_Page (non-commercial; Open Watcom)
http://www.scd.ucar.edu/tcg/consweb/Fortran90/F90.html
http://www.scd.ucar.edu/tcg/consweb/Fortran90/F90Welcome.html (Guide to Fortran 90)
http://www.scd.ucar.edu/tcg/consweb/Fortran90/F90Tutorial/tutorial.html
http://www.eclipse.org/photran/index.php (Photran - An Integrated Development Environment for Fortran)
http://www.openwatcom.org/index.php/Main_Page (Open Watcom)
http://www.g95.org/ (g95)
http://apps.nrbook.com/fortran/index.html (Fortran Numerical Recipes [F77 & F90]; online book)
http://www.fortranplus.co.uk/resources/f77book.pdf (Interactive Fortran 77; online book)
http://www.meteor.iastate.edu/classes/mt227/lectures/Formatting.pdf (FORTRAN 90: Formatted Input/Output; fall 2014)

HTML (including CSS; see Websites)
http://www.htmlhelp.com/distribution/ (manuals)
http://werbach.com/barebones/ (reference)
http://www.w3schools.com/ (Directory including tutorial)
http://www.whoishostingthis.com/resources/html-for-beginners/ (HTML for beginners; tutorial)
http://www.math.unm.edu/writingHTML/tut/index.html (WRITING HTML; tutorial)
http://www.html-5-tutorial.com/ (HTML5 - A tutorial for beginners; tutorial)
https://reviewsquirrel.com/html-cheatsheet/ (HTML Cheat Sheet)
http://www.hitmill.com/html/color_safe.html (color palette)
https://html-color-codes.info/ (HTML Color Chart/Picker)
http://txt2html.sourceforge.net/ (text -> html)
http://www.website101.com/cgi-bin/t2h/Mt2h.cgi (text -> html)
http://www.easysw.com/htmldoc/ (commercial; html -> pdf/ps)
http://www.w3.org/ (W3C standards)
http://www.open-of-course.org/index.php (HTML, CSS, Dreamweaver, Symfony tutorials)
http://www.investintech.com/content/webdesignresourceguide/ (A Word on Web Design: Resource Guide for Beginners)
http://www.drdobbs.com/open-source/dart-build-html5-apps-fast/240005631 (Dart: Build HTML5 Apps Fast; 7/15/12)
https://www.w3schools.com/Css/ (CSS Tutorial)
http://www.csstutorial.net/ (CSStutorial.net)
http://www.hostingreviewbox.com/introduction-to-cascading-style-sheets-css/ (Introduction to Cascading Style Sheets (CSS))
(non-commercial; JS Bin; collabarative JS/HTML/CSS)
http://icecoder.net/ (non-commercial; ICEcoder; open-source browser code editor)
https://codeanywhere.net/ (commercial, but free signup; Codeanywhere; collabarative HTML, PHP, JavaScript, CSS, and XML)
http://www.echoecho.com/index.html (various programming languages)
http://www.ascii.cl/htmlcodes.htm (HTML Codes - Table of ascii characters and symbols)
https://www.ascii-code.com/ (ASCII Code - The extended ASCII table)
http://www.asciitable.com/> (ASCII Table and Description)
https://en.wikipedia.org/wiki/List_of_Unicode_characters (List of Unicode characters)
http://www.webweaver.nu/html-tips/custom-404.shtml (How To Create a Custom 404 Page)
http://html5test.com/ (HTML5test)
https://hostingfacts.com/web-development-101/ (Web Development & Design 101)
https://turbo.net/browsers (Browser Sandbox - Run any browser online, including Chrome, Firefox, IE 8, IE 9, IE 10, and IE 11, and more.)
https://websitesetup.org/html5-cheat-sheet/ (HTML Cheat Sheet (with new HTML5 tags))
https://www.ossblog.org/get-grips-html-free-books/ (Get to Grips with HTML with Free Books; 6/14/17)
https://www.w3schools.com/html/html_symbols.asp (HTML Symbols)

HTTPS
https://opensource.com/business/15/8/interview-daniel-roesler-utilityapi (Interview with Daniel Roesler, UtilityAPI, Why every website should switch to HTTPS; 8/21/15)
http://www.theregister.co.uk/2015/12/03/letsencrypt_public_beta/ (Free HTTPS certs for all - Let's Encrypt opens doors to world+dog; 12/3/15)
https://www.howtoforge.com/tutorial/getting-started-with-lets-encrypt-on-ubuntu/ (Getting started with Let's Encrypt SSL Certificates on Ubuntu; 2/1/16)
https://linuxconfig.org/generate-ssl-certificates-with-letsencrypt-debian-linux (Generate SSL Certificates With LetsEncrypt on Debian Linux; 1/31/17)
https://www.zdnet.com/article/how-to-use-lets-encrypt-to-secure-your-websites/ (How to use Let's Encrypt to secure your websites; 9/19/17)
http://www.cyberciti.biz/faq/how-to-configure-nginx-with-free-lets-encrypt-ssl-certificate-on-debian-or-ubuntu-linux/ (How to configure Nginx with free Let's Encrypt SSL certificate on Debian or Ubuntu Linux; 9/2/16)

Java
http://www.ibm.com/developerworks/java/newto/ (New to Java programming)
http://www.echoecho.com/index.html (various programming languages)

JavaScript
http://jsfiddle.net/ (non-commercial; JSFiddle)
(non-commercial; JS Bin; collabarative JS/HTML/CSS)
https://codeanywhere.net/ (commercial, but free signup; Codeanywhere; collabarative HTML, PHP, JavaScript, CSS, and XML)
http://www.sitepoint.com/15-best-javascript-charting-libraries/ (The 15 Best JavaScript Charting Libraries)
http://www.linuxjournal.com/content/javascript-all-way-down (JavaScript All the Way Down; 4/9/15)
https://opensource.com/article/17/12/learn-javascript (Top 15 resources for learning JavaScript; 12/7/17)

Pascal
http://www.gnu-pascal.de/gpc/h-index.html
http://www.freepascal.org/
http://www.lazarus.freepascal.org/
http://linux.softpedia.com/progDownload/Free-Pascal-Compiler-Download-121.html

PDF
http://tarot.freeshell.org/leafpad/ (commercial; Evince)
http://www.foolabs.com/xpdf/ (non-commercial; XPDF)
http://view.samurajdata.se/ (non-commercial; online viewer)
http://www.mupdf.com/ (non-commercial; MuPDF)
http://okular.kde.org/ (non-commercial; Okular; for KDE)
http://pwmt.org/projects/zathura/ (non-commercial; zathura)
http://pdfedit.petricek.net/pdfedit.index_e
http://www.prepressure.com/
http://sourceforge.net/projects/pdfcreator/ (non-commercial; PDFCreator)
http://www.eprg.org/pdfcorner/text2pdf/ (non-commercial; text2pdf)
http://convert.neevia.com/ (commercial, but free 1MB; converts to PDF and others)
http://www.physik.uni-wuerzburg.de/%7Evrbehr/cups-pdf/ (CUPS-PDF)
http://www.pdfconverter.com/resources/using-pdf-in-linux (Using PDF in Linux)
http://www.pdfsam.org/ (non-commercial; PDFsam; split and merge)

PHP
http://www.whoishostingthis.com/compare/phprojekt/resources/ (non-commercial; PHProjekt; Project Management System)

Postscript
http://www.cs.wisc.edu/~ghost/index.htm (ghostscript/gsvies)
http://www.tailrecursive.org/postscript/postscript.html
http://www-cdf.fnal.gov/offline/PostScript/BLUEBOOK.PDF
http://www.adobe.com/products/postscript/pdfs/PLRM.pdf
http://www.prepressure.com/
http://view.samurajdata.se/ (non-commercial; online viewer)

Python
http://www.python.org/
http://inventwithpython.com/ (Learn to program by making computer games)
http://learnpythonthehardway.org/book/ (Learn Python the Hard Way [online book])
https://blog.udemy.com/python-tutorial/ (Learn Python: A Beginner's Guide to Python)
https://www.djangoproject.com/ (Django)
https://linuxconfig.org/learn-python-fundamentals (Learn Python Fundamentals; 12/20/16)

RPM (creating)
http://www.netadmintools.com/art272.html (Roll Your Own RPM)
http://pmc.ucsc.edu/~dmk/notes/RPMs/Creating_RPMs.html (Creating RPMs)

Ruby
https://rubygems.org/ (RubyGem; Ruby add-on)
http://www.blackbytes.info/ (Black Bytes; programmer blog, but mostly Ruby)

Scratch (children programming language)
http://scratch.mit.edu/ (Main Site)

Websites (creating)
http://www.dailyhosting.net/how-to-make-a-website-a-step-by-step-guide/

Wiki
http://wiki.splitbrain.org/wiki%3Amanual (DokuWiki Manual)
http://wiki.splitbrain.org/wiki%3Adokuwiki (DokuWiki Directory)

My computer geek score is greater than 51% of all people in the world! How do you compare? Click here to find out!

I am nerdier than 75% of all people. Are you a nerd? Click here to find out!

[1] About this webpage and logos

For more infos about the penguins (in the logos), see Linux 2.0 Penguins
Webpage powered by
Logos graphics located at

Home

Tux's Links

Directories (have multiple things)

Organizations

Documentations

Hardware HowTo