SlimDX SDK (January 2012)

All of the code is under the MIT/X11 license, and all content is under the Creative Commons Attribution-Share Alike license.

SlimDX is a free open source framework that enables developers to easily build DirectX applications using .NET technologies such as C#, VB.NET, and IronPython. It is designed to be an efficient, simple, and lean wrapper that fully encompasses all of Microsoft's gaming and multimedia technologies and exposes them to managed code.