.NET Languages
   List of .NET programming languages; resources. [DotNetPowered.com]
   http://www.dotnetpowered.com/languages.aspx

Licensing .Net Pro
   Software license management for .Net software and components. Provides software encryption and source code obsfucation.
   http://www.licensingdotnet.com

MC# (MCSharp)
   A high-level object oriented programming language based on .NET Platform created specially for developing complex industrial program systems that could use multiprocessor architectures.
   http://u.pereslavl.ru/~vadim/MCSharp/

Nemerle
   A hybrid (functional, object-oriented and imperative) programming language for the .NET platform. It is statically typed, has metaprogramming capabilities and is specifically designed for programmers with C#/Java background. [Open source, BSD-like license
   http://nemerle.org/