JavaScript 3D library
FlightGear Flight Simulator: free open-source multiplatform flight sim
An interactive viewer for three-dimensional chemical structures.
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
CIRT - CUDA Interactive Ray Tracer
Support for legacy OpenGL in core profiles
C++ Frontend for the RenderMan Interface
Rayshade raytracer
Growth-grammar related Interactive Modelling Platform
Tao3D is a programming language for real-time interactive 3D
3D Charts - Templates for PovRay(TM)
3D .NET engine for Windows, Linux, Mac
Pear3DEngine is a modern and modular 3D development framework
XNavigator is a Virtual Earth browser and viewer for http://osm-3d.org
Multi-Language Wrapper Collection for the Irrlicht Engine
loadmd2_chung is a dll to load 3D md2 models into openGL
Bruno's RAY Tracing Engine