Software Freedom Day is a global, grassroots effort to educate the public about the virtues and availability of Free and Open Source Software. Local teams from all over the world are organising events on 16 September 2006.

The theme for Software Freedom Day is "Free Enterprise, Free Speech, Free Software", and aims to effectively help the unfamiliar connect "Free Software" with freedom.

http://www.softwarefreedomday.org/

Free Software Foundation:
http://www.fsf.org/