CTFs as you need them
Arianne is an engine to develop multiplayer online games like Stendhal
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Event driven concurrent framework for Python
evolution for vegastrike SpaceSim/Combat/Trade game
AutoTeach makes kids study and learn in exchange for internet access.
Open Source Virtual World and MMOG Development Platform