Pear3DEngine is a modern and modular 3D development framework
C/C++ library to add light and intuitive GUI to OpenGL and DX programs
.NET library for generating 3D models of trees and forests.
Minimalist 3D Scenegraph Management Framework
Real-time 3D visualization of space
First person glmatrix plugin - webGL
Interactive spherical geometry software.
https://github.com/horde3d/Horde3D
A Lightweighted Toolkit For Volume Rendering
A continuation of the abandoned Tao Framework project.
Collections of abstractions for Pure Data