Personal page with links to programs for modeling, Ray tracing, converting, and animating. Plus models for various ray tracers. Windows, MacOS and Unix.
Open Source Raytracer with a scene description language that provides constructs for programming like loops and functions. Its written in C++ and runs on Windows and Linux/Unix.
A game engine aiming towards three dimensional computer graphics which fits both human perception and the shape of the real world better than common polygon engines do. Linux.