Non-profit organization dedicated to eliminating restrictions on copying, redistributing, understanding, and modifying computer programs. GNU Project was begun to develop a complete free Unix-like operating system. http://www.gnu.org/
The Open Source Initiative is dedicated to managing and promoting the Open Source trademark for the good of the community. The phrase `open source' has been registered as a certification mark. You can examine the Open Source Definition, which defines some http://www.opensource.org/
Microsoft are getting very worried indeed about competition from Open Source Software such as Linux. This leaked internal memo, courtesy of Eric Raymond, reveals all -- including the extreme lengths Microsoft is willing to go to squash its competition. http://www.opensource.org/halloween/
Amusing strip following the antics of Columbia Internet and its employees. Frequently touches on Open Source, Linux, hacker culture, and holy wars. http://www.userfriendly.org/
Contains the Debian Free Software Guidelines, which are regarded as compliance rules for free software by many others besides Debian package maintainers. http://www.debian.org/social_contract