Mercurial (a project of the Software Freedom Conservancy)

Preferred license: GNU General Public License (GPL)
Mercurial is a state of the art distributed version control system written mostly in Python (some performance-sensitive parts are written in C). We have a small band of developers and some big projects using our software (Mozilla, OpenJDK, OpenSolaris). We are part of the Software Freedom Conservancy and would like to find some more people to help us develop our software in the DVCS competition.
 
Current Projects
by Stefano Tortarolo, mentored by Matthew Mackall
by Amaury GAUTHIER, mentored by Dirk Johannes Christiaan Ochtman
by Frédéric Rechtenstein, mentored by Alexis Sakurai Landgraf Carvalho
by Germán Póo-Caamaño, mentored by Peter Arrenbrecht