HEATKEYS

Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

LinuxCommand.org is a web site devoted to helping users of legacy operating systems discover the power of Linux.

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

Explore how the principles behind open source--collaboration, transparency, and rapid prototyping--are proven catalysts for innovation.

Tecmint - Linux Howtos, Tutorials, Guides, News, Tips and Tricks.

Provides Instruction Guides, How-Tos, Troubleshooting Tips and Tricks on Linux, Database, Hardware, Security, Web and Open Source for both Newbies and Geeks - TheGeekStuff by Ramesh Natarajan

WebUpd8 is an Ubuntu / Linux blog which delivers daily news and application reviews

AlternativeTo let you find new PC (Windows, Linux), Mac, iPhone, Android, Web/Online software based on applications you already know instead of useless categories. We make each application into a category. (AlternativeTo is sometimes called alternati...