a parametric 3D CAD modeler
Open Source Solid Modeling CAD
X3D is the open-standard format for 3D graphics scenes on the Web.
HARFANG 3D source code public repository
Electromagnetic Analysis Software
Creates 3D models from photographs
3D rendering and scene graph library (moved to GitHub)
Converts between many 3D data formats
Fractal planet and terrain generator
A processing system for 3D triangular meshes
Maxwell Render for Blender
A C++ Tool for the Fast Prototyping of Topological Data Structures