For those of you who find the Windows task manager a little too light on features, we’ve got an awesome little application for you. Process Hacker does the same basic functions as task manager, but with lots of invaluable extras.
Task manager only lists running processes, but Process Hacker allows you to investigate where these processes are coming from (even if they are hidden) and displays helpful graphs and statistics about them. Its kernel-mode driver gives the application the power to terminate, suspend and resume all processes and threads, including those that are usually untouchable by Window’s task manager. And while yes, it may look a bit like Sysinternal’s Process Explorer, we think Process Hacker is a little easier to use. Best of all, it’s an open-source free utility.
[Process Hacker on Sourceforge.net]