IronPython is an implementation of the Python programming language running under .NET and Silverlight. It supports an interactive console with fully dynamic compilation. It’s well integrated with the rest of the .NET Framework and makes all .NET libraries easily available to Python programmers, while maintaining compatibility with the Python language. IronPython is an open source [...]

IronRuby is a Open Source implementation of the Ruby programming language for .NET and Silverlight, heavily relying on Microsoft’s Dynamic Language Runtime. Home Page : http://ironruby.net/ License : Microsoft Public License (MS-PL)

Moonlight is an open source implementation of Silverlight (http://silverlight.net), primarily for Linux and other Unix/X11 based operating systems. In September of 2007, Microsoft and Novell announced a technical collaboration that includes access to Microsoft’s test suites for Silverlight and the distribution of a Media Pack for Linux users that will contain licensed media codecs for [...]