What is ILSpy?
I was reading last night an article about how great Red Gate .NET Reflector was (and still is), but many people were disappointed when Reg Gate announced back in February 2011 that the Free version of .NET Reflector ceased to exist.
Well, the good news is that some very smart guys got together and started the development of ILSpy, an open-source project which is very similar to .NET Reflector.
Some opinions say that ILSpy kept most of the functionality from .NET Reflector, it does the work pretty well and is very easy to use, but you can go ahead and check out http://ilspy.net where they provide other screenshots, links to their community and a very long list of features.
Great work, guys!