MonoDevelop is an IDE focusing on developing desktop, mobile and web applications using C# and other .NET languages
SharpDevelop (also styled as #develop) is a free and open source integrated development environment IDE for the Microsoft .NET, Mono, Gtk# and Glade# platforms, and supports development in C#, Visual Basic .NET, Boo, F#, IronPython and IronRuby programming languages.
"Monodevelop is more of a replacement of an ide for mac and linux in windows the recommended thing is to use visual studio or sharpdevelop"
from question "How do I start debugging in MonoDevelop?"
"I like the monodevelop ide even better than sharpdevelop but i m not sold on installing and using mono s compiler just yet nor do i know if it can even handle the latest vb.net c# language features"
from question "Can MonoDevelop (2.2b2) running on Windows use the Microsoft compilers?"