A free (LGPL) and portable 3D engine written in C++. It supports: true six degree's of freedom, colored lighting, mipmapping, portals, mirrors, alpha transparency, reflective surfaces, 3D sprites, scripting (using Python or other languages), 8-bit, 16-bit, and 32-bit display support, Direct3D under Windows, Glide and OpenGL? on Windows, Linux, OS/2, Macintosh, and BeOS?.
The home page can be found at http://crystal.sourceforge.net.
This is the official on-line repository for the code from the Graphics Gems series of books.
The home page can be found at http://www.acm.org/tog/GraphicsGems/.