SysTree++ is a freeware application that lets you see what is going on on your system.
It is a cross-over between ms spy++ and windows task manager. A complete tree-hierarchy of your system, so you can see literally everything that is running on your system. Lets you monitor, manage and save all processes, threads and windows running on system. You can set the priority for processes and threads. End processes and individual threads without warning pop-ups. Toggle windows visibility. Easily copy info text to clipboard and save all info to a text file.
Download: SysTree++ 1.7