Pear3DEngine is a modern and modular 3D development framework
Real-time 3D visualization of space
QCSS Player by Shuffle
Minimalist 3D Scenegraph Management Framework
A Lightweighted Toolkit For Volume Rendering
https://github.com/horde3d/Horde3D
true 3D Labyrinths - generating, rendering, exploring, building
Simple and easy raytracer implementation
3d printing software
Multi-Language Wrapper Collection for the Irrlicht Engine
PixelLight is a cross-platform application framework
Free vector,quaternion,matrix math library
Megalui: 2D/3D OpenGL & C/C++ Library for Scientific Visualizations