aka ogre v2 - scene-oriented, flexible 3D C++ engine
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
crossplatform multithreaded object-oriented render and audio engine
Subdivision Surface Object Creator Open Source Project
Cross Platform GUI Toolkit
The programmer's solid 3D CAD modeller
Paint brush program which you can draw objects, Object Painter
Learning Modern 3D Graphics Programming
A PDF parsing, modification and creation library.
Free 3D Mobile CAD
Character animation system for games and simulations.
A brief computer graphics / rendering course
High performance image processing library in C++
3D rendering and scene graph library (moved to GitHub)
A Realistic and Rich 3D Environment
A raytracer that tries to combine simplicity with power.