A raytracing framework for optical/non-optical physics simulations
A world editor for HGE game engine written in python and uses OpenGL.
A cross-platform game framework based on OpenGL and GObject.
3D game engine for C and C++
Imprudence is an open source metaverse viewer project.
Pear3DEngine is a modern and modular 3D development framework
Multi-Language Wrapper Collection for the Irrlicht Engine
Game engine supporting many 3D/2D formats and graphic effects
Bruno's RAY Tracing Engine