savannah.gnu.org,
originally intended to be a SourceForge-platform for official GNU-packages.
Because SourceForge became propietary shortly after Savannah was launched, a fork
of SourceForge, Savane,
was started, which is still free software.
Today Savannah also hosts free software projects that are not official
GNU-packages: savannah.nongnu.org, as long as they're
published under a GPL-compatible licence and independent of non-free
software.
sourceforge.net, offers the
same kind of service as Savannah does. Differences to Savannah are, that
the software running on sourceforge.net's servers is propietary and that
sourceforge.net also hosts free software projects with GPL-incompatible licences
and dependencies to non-free software. For sourceforge.net it's only
important that the license of the software to be hosted is accepted by the
OSI as an "open
source" license.
