Process Master

Process Master is an advanced utility for hidden processes detection and killing. These processes usually are the results of the virus, spyware and rootkits activity.

And you will not be able to see them using Windows Task Manager.
Process Master uses advanced low-level system technics to detect hidden processes. It successfully detects the presence of such famous rootkits as HackerDefender and Fu. Even if your favourite anti-virus or anti-spyware program can not detect hidden process, you have the chance to detect it manually using Process Master. It is a necessary tool for every advanced user.