Panda3D is a powerful 3-D rendering engine for many Unix-based and Windows platforms. See the Panda3D home page at http://www.panda3d.org for more information and for forums and downloads; we use the SourceForge site to host the CVS repository.
One of best game and rendering engines out there. Can be programed in both c++ and python, absolutely beautiful ! With iOS and android support, custom file format and amzing speed, it dominates free market
Great software, thank you.