CTFs as you need them
Vivid3D is a C++ IDE/3D engine, with python scripting.
Arianne is an engine to develop multiplayer online games like Stendhal
Multidocument automation by templates - for sphinx, mkdocs, epydoc ...
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
A powerful cross-platform and open-source 3-D rendering engine.
Card, board & tiles making Software