Several years ago, Microsoft announced that Ruby and Python were coming to .net. The projects were called IronRuby and IronPython, respectively. Microsoft said that the projects would be built on top of the .net DLR.
WIKIpedia indicates that for all intents and purposes, these projects have been abandoned by Microsoft.
Why did Microsoft abandon these projects?
They are open source and not made by MS. IronPython is still in existence, built in .NET and under active development, however, only for Python 2.7, not 3.3 (yet?). A fresh version was released a few days ago. I don't know about IronRuby.
Additionally, in combination with Python Tools for Visual Studio (PTVS), you can use Visual Studio for IronPython development.
