mPhysics is a managed .NET wrapper for Ageia's PhysX SDK v2.4.0.
We are currently in the early stages of wrapping and cleaning up the SDK,
so please check back when we produce something stable.
The latest PhysX SDK can be downloaded from Ageia's website
here (registration required)
Also, our documentation so far is available:
mPhysics Reference Pages (Note: Very preliminary!)
(Documentation created by NDoc, thanks to Jonas for modifying it to work with .Net 2.0 here)