.NET Tools (Developers Must Have)

It's been a while since anyone has recommended .NET tools. This page looks like it has a good set of recommendations. Ten Must-Have Tools Every Developer Should Download Now http://msdn.microsoft.com/msdnmag/issues/04/07/MustHaveTools/default.aspx. Of course, there's also FarPoint Spread for ASP.NET and FarPoint Spread for Windows Forms, but you already knew that, right? Would anyone like to recommend any others?