3D plotting and mesh analysis through a streamlined interface
A 3D surface and volumetric mesh generator for MATLAB/Octave
Realtime raytracer using SIMD on ARM, MIPS, PPC and x86
another java library for 3d rendering without hardware accel.
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
Free 3D Mobile CAD
CSG for jMonkey
The Vienna Topography Simulator
Solid Modeling Framework in GPU
Constructive solid geometry on meshes using BSP trees in JavaScript