ILSpy

Looking for an free alternative to .NET Reflector as Redgate is nowadays charging for Reflector? .NET Reflector is well worth its money but if you want to try an alternative, SharpDevelop has started working on ILSpy.

The tool is as it is in very early development not as powerful as Reflector when it comes to plugins and features but it will be fun to see the future of it. Already all the basic IL-functionality is in place which is great value to everyone when inspecting the internals of any assembly.

To try it out have a look here.