Jayrock

Jayrock is a modest and an open source implementation of JSON and JSON-RPC for the .NET Framework, including ASP.NET. Using Jayrock, clients like JavaScript in web pages, can call into server-side ASP.NET methods using JSON as the wire format and JSON-RPC as the procedure invocation protocol.
Category	Web Frameworks
License	GNU Library or Lesser General Public License (LGPL)
HomePage	http://jayrock.berlios.de/