+1  A: 

It would seem to list all processes using modules like mscoree.dll, mscorwks.dll, etc. This would be .NET processes and possibly processes hosting .NET plug-ins.

Jason Stangroome
Wow, there are surprisingly few ".NET processes" on my Vista box.
Yeah, I was getting no results until I opened a PowerShell window.
Jason Stangroome
+1  A: 

This is a very useful command line tool in windows that shows you a list of all running processes. Passing in a command line parameter of /m "mscor*" lists out all of the processes running on your machine running that are using assemblies that begin with the name "mscor". The "*" is a wildcard character.

Micah
+2  A: 

It will show processes that have loaded modules (usaully .DLL files) hosting the .NET runtime. The same technique can be used to search for other DLLs that have been loaded.

On a related note, Process Explorer is a Microsoft task manager replacement that will show .NET processes highlighted. I cannot recommend it enough. It is well worth investigating along with the rest of the Sysinternals Suite.

Thomas Bratt