Avogadro libraries provide 3D rendering, visualization, and analysis
A simple multi-platfom 2D Animation Software for all ages!
3D Procedural Modelling and Procedural Texturing Tool in OpenGL/C++
Design your own pottery for 3D printing in full color
Editor for configuring the open source navigation program Navit
Plate Tectonics simulator
Easy creation of normal maps
Development has moved to github
Gimpel3D - 2D/3D Stereo Conversion Editor
Simplified 3D Model Editor, Suitable For Beginners
KPEdit - A 2D skeletal animation editor.
Megalui: 2D/3D OpenGL & C/C++ Library for Scientific Visualizations