malwarebytes anti-malware :

Malwarebytes' Anti-Malware is considered to be the next step in the detection and removal of malware. In our product we have compiled a number of new technologies that are designed to quickly detect, destroy, and prevent malware.

 

Key Features:
* Support for Windows 2000, XP, Vista, and 7 (32-bit and 64-bit).
* Light speed quick scanning.
* Ability to perform full scans for all drives.