Arianne is an engine to develop multiplayer online games like Stendhal
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
AutoTeach makes kids study and learn in exchange for internet access.
A mobile tower 3D tower defense/defend the flag game
A world editor for HGE game engine written in python and uses OpenGL.
Open Source Virtual World and MMOG Development Platform
Make games with Lego-like building blocks