PyMOL is an OpenGL based molecular visualization system
A framework for distributed computing
3D Software Renderer in 700 Lines
Java implementation of a software renderer.
A simple and easy to use render farm for Blender
a java based software to convert 2D to 3D images.
Support for jgeom, the java geometry graphics library using NURBS
Pear3DEngine is a modern and modular 3D development framework
A 3D rendering / entity engine
A simple web interface for Blender, for rendering animations..