The tao framework is a collection of bindings and libraries to facilitate cross-platform games-related development utilizing the mono and .net platforms.

opengl is a vendor-neutral, multi-platform standard for high performance 2d/3d graphics on devices ranging from mobile phones to pcs to supercomputers. glu is the opengl utility library. this is a set of functions to create texture mipmaps from a base image, map coordinates between screen and object space, and draw quadric surfaces and nurbs.