Xbox 360 Controller Input Library for Unity
XboxCtrlrInput is a C# wrapper for Unity3D that handles Xbox 360 controller input. It's used in the same way as Unity's Input class. It's not a script and thus does not need to be attached to any GameObject.
The project is hosted on Github and I invite anyone to help contribute. It’s free, open source, and public domain. Be sure to read the README file on Github.