Free Comodo AntiVirus Publisher's description:

Free Comodo AntiVirus detects and destroys malware and viruses

Comodo AntiVirus is the free way to rid your computer of viruses, malware, Trojans, worms, hackers, and other Internet threats. Scan any drive or file. Get in-depth reports on viral activity. Detect suspicious files that behave like viruses do. Even scan compressed .zip files, where viruses often hide. Proactive intelligent protection intercepts unknown threats. Comodo AntiVirus also includes a mechanism for you, the user, to submit any files you find suspicious to the Comodo Safe List. Get immediate feedback on possibly viral files: have any other users submitted it? Or has it already been declared PC-friendly and landed on the Safe List? Instant feedback, from our security experts and your own PC-using peers. When used in conjunction with Comodo Firewall, your PC is being protected by two powerful tools to repel, track down, or destroy viral invaders. Its a free two-tiered security system that exceeds even the big guys out there. Includes free automatic updates for the latest in antivirus coverage. Its real protectionat no cost.