Here is a list of the tools:
- NUnit to write unit tests
- NDoc to create code documentation
- NAnt to build your solutions
- CodeSmith to generate code
- FxCop to police your code
- Snippet Compiler to compile small bits of code
- Two different switcher tools, the ASP.NET Version Switcher and the Visual Studio .NET Project Converter
- Regulator to build regular expressions
- .NET Reflector to examine assemblies
Here is a link to the online version of this article, where you can read - How to use each of them.
http://msdn.microsoft.com/msdnmag/issues/04/07/MustHaveTools/default.aspx