Open-source, cross-platform 3D rendering engine for .NET and Mono. The Axiom Engine is a high-performance C# port of the powerful OGRE engine and provides full support for DirectX, OpenGL and XNA on Windows, Linux, Android, iPhone and Windows Phone.
C3A is a cross platform format for animated 3D geometry.
Compact, fast, low bandwidth, and compatible with all current hardware/firmware; DirectX, OpenGL, XBox, PS2, 360, PS3, PSP, Wii, & DS.