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
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
Optical Simulation software
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