http://www.fsf.org/

http://en.wikipedia.org/wiki/Free_software

http://directory.fsf.org/

http://www.thefreesite.com/Free_Software/

http://download.cnet.com/

http://www.freewarefiles.com/

http://www.completelyfreesoftware.com/

http://en.wikipedia.org/wiki/Free_software_licence#The_Permissive_versus_Copyleft_controversy

http://www.answers.com/topic/free-software

http://www.gnu.org/

http://www.freewarehome.com/

http://www.tucows.com/

http://www.filehippo.com/

http://www.ksourcerer.org/

http://www.avast.com/eng/free_software.html

http://www.freesoftware.ws/

http://www.fsf.org/about/what-is-free-software

http://www.shareware.com/

http://freebies.about.com/od/freesoftware/Free_Software.htm

http://onlamp.com/pub/a/onlamp/2005/09/29/what-is-free-software.html