Measuring Class Dependencies

Question

I want to measure dependencies between classes - what's the best approach and tools to use?

I'm working in MS .Net

Text based information / reports are OK, but I'd prefer something visual.

Open source tool would be ideal.

Answer 1

ndepend is a tool you can use

Or you can try Depender.

Answer 2

This may not help (right now), but it looks like VS 2010 will have a dependency graph feature out of the box. Looks like it will do class, namespace, and assembly dependencies.