Comodo

Computer viruses; We all dread them. Most of us even have a horror story or two about the damage they've done. Dozens of antivirus programs exist, with varying prices and different levels of effectiveness. Only this Antivirus download however, offers total PC protection for free. It's not some stripped down version of a paid product: it's the real deal. Scan any drive or file. Get in-depth reports on viral activity. Detect suspicious files that behave like computer viruses do. Even scan compressed .zip files, where viruses often hide. All in one attractive user-friendly interface.
Antivirus also includes a mechanism for you, the user, to submit any files you find suspicious to the 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 other PC-users.
When used in conjunction with our Firewall, your PC is being protected by two powerful tools to repel, track down, or destroy viruses, trojans and spyware. It's a free two-tiered security system that exceeds even the big guys out there. It's real protection...at no cost.

                                                               Download Comodo