Open Source Solid Modeling CAD
Earth orbits and satellite coverage display in 3D on your laptop.
Xj3D is an open-source Java codebase for the X3D Graphics standard.
Java3d scenegraph editor
PyMOL is an OpenGL based molecular visualization system
3D rendering and scene graph library (moved to GitHub)
Gphoton in a simple 3d modeler and ray tracer.
A processing system for 3D triangular meshes
Maxwell Render for Blender
A simple and easy to use render farm for Blender