Blockbench - A low poly 3D model editor
Console-based GLSL Sandbox for 2D/3D shaders shaders
X3D is the open-standard format for 3D graphics scenes on the Web.
A C++ Tool for the Fast Prototyping of Topological Data Structures
Multimedia asset management and manipulator for Étoilé
Gimpel3D - 2D/3D Stereo Conversion Editor
(Moved to http://code.google.com/p/igb/)