Open Source Solid Modeling CAD
Another drawing editor for LaTeX with PSTricks & TikZ
A video-based animated GIF creator
A world editor for HGE game engine written in python and uses OpenGL.
Hand Written Equation Creator
Pear3DEngine is a modern and modular 3D development framework
Overlay-based comics translation tool
A tool for roleplaying gamemasters
AMOS BASIC reimplementation in Java