O'Reilly Network: An Architectural Tour of Rotor

The Microsoft Shared Source CLI Implementation (aka "Rotor") is a source code distribution that includes fully functional implementations of both the ECMA-334 C# language standard and the ECMA-335 Common Language Infrastructure standard. These standards together represent a substantial subset of what is available in the Microsoft .NET Framework. The source code will build and run under Windows XP or FreeBSD 4.5, and the distribution contains numerous additional goodies, including a JScript compiler written entirely in C#, an IL assembler, a disassembler, a debugger, tools for examining metadata, and other samples and utilities. To complement this article, we've also published "Get Your Rotor Running", which takes you through the steps of installing, building and running Rotor.