spidermonkey-dotnet is a binding between the original JavaScript engine SpiderMonkey and the .Net platform.
The current beta release is a stable, thin interface to the engine:
Embedding a C# class in SpiderMonkey The code in alpha provides functions to
automatically embed your classes into the engine with little, if any, interaction with the JS API. The best example I'm working on is now
GibberMonkey.
contact: derekpetillo@yahoo.com