CTFs as you need them
Arianne is an engine to develop multiplayer online games like Stendhal
Vivid3D is a C++ IDE/3D engine, with python scripting.
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
Event driven concurrent framework for Python
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
Pygrid is an open-source and cross-platform pygame/python 2D engine.
A graphics engine + toolkit.
Sprite Font Creator
Game framework on top of Python, Panda3D and Twisted