Matlab toolbox for Geometry Processing
Efficient library for processing 3D data
a parametric 3D CAD modeler
Open Source Solid Modeling CAD
3D slider puzzles for kids; helps teach solid geometry
Create and edit LDraw™ parts quick and easy.
A math-inspired CAD program in haskell. CSG, bevels, and shells
The programmer's solid 3D CAD modeller
Optical Simulation software
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
NETGEN is an automatic 3d tetrahedral mesh generator
Free 3D Mobile CAD
Geometry processing library for Python
CSG for jMonkey
Imagin Raytracer is a multithreaded command line raytracer
Solid Modeling Framework in GPU
Simplified 3D Model Editor, Suitable For Beginners
3D modeling for everybody
Constructive solid geometry on meshes using BSP trees in JavaScript