GNU Savannah is a project of the Free Software Foundation initiated by Loïc Dachary, which serves as a collaborative software development management system for free Software projects. Savannah currently offers CVS, GNU arch, Subversion, Git, Mercurial, Bazaar, mailing list, web hosting, file hosting, and bug tracking services. Savannah runs Savane, which is based on the same software as that used to run the popular SourceForge portal.
Savannah's website is split into two domain names: savannah.gnu.org for software that is officially part of the GNU Project, and savannah.nongnu.org for all other software.
Unlike SourceForge or GitHub, Savannah's focus is for hosting free software projects and has very strict hosting policies, including a ban against the use of non-free formats (such as Macromedia Flash) to ensure that only free software is hosted. When registering a project, project submitters have to state which free software license the project uses.
GNU Savannah was installed by Loïc Dachary on a server located in Boston for the benefit of the GNU Project when, as contributor to SourceForge, he found out the latter was to be turned into proprietary software. People contributing to GNU Savannah were called savannah-hackers from this day, as it was at first more a quick hack than anything else.
In 2003, Vincent Caron, friend to Loïc Dachary, found out the security of the server located was compromised. A new server has been bought by the Free Software Foundation to provide a clean reinstall of the software. When this server was put in place, after a four month outage without any public news, only Free Software Foundation employees had access to it. Notably savannah-hackers had no access  and found out that Richard M. Stallman decided to move GNU Savannah to GForge because it was "seriously maintained". In response, Vincent Caron, Loïc Dachary and Mathieu Roy put up an alternative instance of the software called Gna!, with a specific constitution preventing any unexpected take over inspired by the Debian Social Contract.
GNU Savannah was totally or partly offline for months and, ultimately, did not move to GForge, which itself turned into proprietary software.
- Savane (software) - the software running GNU Savannah
- Gna! – a software development hosting site by Free Software Foundation France.
- Comparison of open-source software hosting facilities
- Fusionforge – the continuity of the original opensource GForge
- GForge – another fork of SourceForge, now proprietary
- SourceForge – software used by GNU Savannah before fork
- Tigris.org – a software development hosting site for software hosting software itself
- http://savannah.gnu.org/ and http://savannah.nongnu.org/ – Savannah main sites
- Savane – software home site
- "FSF Migrating From Savannah to Gforge". Slashdot. 2004-04-13. Article and discussion about potential software change which didn't happen