An Open Source Render compatible with the RenderMan Interface (currently version 3.2) from Pixar and highly expandable, with addition of geometric plug-ins, hidder plug-ins, output device plug-ins, and Shading Language extension plug-ins.
Raytracer in Objective-C as development language. The goal is create an unbiased raytracer multiplatform under the GPL. Concurrent render, modular development for free artists.