FSF
[Free Software Foundation -- concluded on 2008]The Free Software Foundation (FSF) is the principal organizational sponsor of the GNU Project. FSF relies on voluntary support from individuals, organizations and companies who support FSF's mission to preserve, protect and promote the freedom to use, study, copy, modify, and redistribute computer software, and to defend the rights of Free Software users.
- The project's own website
In March 2001, an European sister organization was founded, which has similar objectives as the American (international) FSF. This FSF Europe is sponsored by NLnet as well.