Process Explorer

Process Explorer is an advanced task manager and security system. It is an indispensable tool for both beginners and power users. I use it all the time to kill tasks that refuse to be killed, or find what which processes are still holding on to a particular file or DLL so it refuses to be deleted.

The unique capabilities of Process Explorer make it useful for tracking down DLL-version problems or handle leaks, and provide insight into the way Windows and applications work.
Download:ProcessXP