I just came across the news this morning. I used Reflector a lot when I was first learning .NET. Lately, I’ve been using it with the Graph and DependencyStructureMatrix plug-ins to figure out where applications are too tightly coupled. I’m glad it’s staying free to users.
For Graph and DependencyStructureMatrix you can also use NDepend:
NDepend looks like a very capable tool. It would certainly be my preference (if I had the budget).
What I’ve found in my experience with past employers is that there’s some reluctance to spend what it would cost per license on a tool like NDepend. I ended up buying ReSharper on my own because of this.