a set of extensions built on top of .NET and integrated with WinForms to provide application-level services in the same flavor as the Microsoft Foundation Classes (MFC)
a tool that automatically converts existing Java-language code into Microsoft Visual C# for developers who want to move existing applications to the .NET Framework.
Designed for allowing to all UNIX/Linux developers faster computer systems design using a friendly GUI application. Not only a diagramming tool but rather a complete CASE tool based on the OMG standars and fully compatible with propietary tools.