The FSF is dedicated to eliminating restrictions on copying, redistribution, and modifying computer programs. It developed the GNU Public License under which Linux is distributed. http://www.gnu.org/fsf/fsf.html
An open coalition of commercial companies and non-profit associations united to promote and protect a vigourous European software culture based on open source software. http://www.eurolinux.org/
Simple End-User Linux for Education. Includes case studies, an application directory, and a discussion group for using Linux in educational settings. http://seul.org/edu/