Ever wonder which program has a certain file or folder open? Now you can find out. Process Explorer displays a list of currently running processes and DLL’s on a the local Windows based system.
It is very useful for finding viruses and malware. For example, if the computer is launching popups every few minutes, Process Explorer will allow you to see the parent program that is launching it which will be your culprit. This is a must have in any computer technicians toolbox.

Screenshot:
Process Explorer

Downloads:
Official Site – (1.5mb)