BugBopper

Finds unknown threats in your machine by positively identifying every executable. Unknown executables are immediately transmitted to our lab for free analysis. Boasts highest detection rate of any product. Checks running processes, autostart locations, cookies, too. Smallest footprint of any AV product. Self-updating. Very, very fast. Compatible with all AV products. Context-sensitive help. Free!

Developed by pioneers in the anti-virus and anti-spyware industry, BugBopper was developed to solve a growing problem: malware is now emerging at a rate of about 17, 000 new malware files a day and traditional scanners are not keeping pace. The average scanner only detects about 62% of malware files, no product detects more than about 80%, and less than 1% of all malware is detected by all products. Due to its different design, BugBopper can identify everything -- because every unknown file is carefully analyzed before pronouncing it "ok".

You will find that BugBopper runs far faster than other scanners, detects more, provides more useful information on what it has found, yet uses less memory and has a smaller footprint on disk.