Open Source Solid Modeling CAD
GLScene Engine for Delphi & C++Builder VCL Windows 32/64
Python 3D renderer with wireless display support
Source code for efficiently rendering parametrically defined surfaces
A framework for distributed computing
3D .NET engine for Windows, Linux, Mac
Webgl Engine
A world editor for HGE game engine written in python and uses OpenGL.
Pear3DEngine is a modern and modular 3D development framework