Tao3D is a programming language for real-time interactive 3D
PyMOL is an OpenGL based molecular visualization system
3D Charts - Templates for PovRay(TM)
Program for drawing 3D surfaces from parametric equations
Gphoton in a simple 3d modeler and ray tracer.
A processing system for 3D triangular meshes
Sorry this project is no longer being supported
realtime 3d surface rendering library
Imagin Raytracer is a multithreaded command line raytracer
A simple and easy to use render farm for Blender
PHIGS (Programmer's Hierarchical Interactive Graphics System)