The programmer's solid 3D CAD modeller
A math-inspired CAD program in haskell. CSG, bevels, and shells
a parametric 3D CAD modeler
Optical Simulation software
Create and edit LDraw™ parts quick and easy.
3D slider puzzles for kids; helps teach solid geometry
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
NETGEN is an automatic 3d tetrahedral mesh generator
Go 3D Game Engine
Open Source Solid Modeling CAD
Free 3D Mobile CAD
CSG for jMonkey
Solid Modeling Framework in GPU
local feature descriptor.
Simplified 3D Model Editor, Suitable For Beginners
Interactive spherical geometry software.
3D modeling for everybody