MalwareBytes Anti-Malware – destroy bad bytes in a jiffy!
MalwareBytes is a free and easy-to-use anti-malware program which effectively scans your computer and removes malware & other malicious programs. It is also quite fast, as a quick scan only takes around 8 minutes.
MalwareBytes can also determine the difference between dangerous applications, as well as false positives. The software has been CNET's Editors' Choice in April 2009 and is available for Windows only at this time.