Test for memory leaks in .NET applications

Question

Are there any good(and free) tools for either analyzing static source or running programs to help detect memory leaks?

I\'ve built some windows services and want to make

Answer 1

Doesn't meet your requirements of being free, but there's one by Red Gate I think is worth suggesting - ANTS Memory Profiler

I've used a number of their tools before (some on trial, some we've bought) and found them to be very good.