.NET Reflector

Red Gate has now integrated Reflector into the flow of debugging which was usually quite time consuming.

Adding Reflector Pro to Visual Studio is going to save me time, and if it saves me more than a few hours over the next year or two, it will more than pay for itself.
Explore and analyze compiled .NET assemblies, viewing them in C#, Visual Basic and IL..Now supports .NET 4 , and includes a 14-day free trial of .NET Reflector Pro.Step into decompiled assemblies whilst debugging in Visual Studio.