A project that has moved to GitHub
A simple 3D framework in C++
Doing 3D with Tcl
A shader-based software renderer written from scratch in C89
Cross-platform 2D and 3D game engine
3D rendering and scene graph library (moved to GitHub)
free implementation of the OpenGL Character Renderer
Perl bindings to the Modern OpenGL API
PHIGS (Programmer's Hierarchical Interactive Graphics System)
3D game engine for C and C++
https://github.com/horde3d/Horde3D
Multi-Language Wrapper Collection for the Irrlicht Engine