Antivirus company Sophos bought Surfright, one of its competitors, last year. Sophos is currently in the process of integrating Surfright's products and technology. Meanwhile, Surfright's "Hitman Pro" product is currently free for home use.

Hitman Pro is described as a second-opinion malware scanner. Whereas traditional scanners don't play well together, and only work if they are the sole scanner installed on your computer, these second-opinion products happily coexist with your installed product and, as the name suggests, provides a way to double-check that your computer really is free of malware and viruses.

Hitman Pro is currently free for unlimited home use. While it's a good tool for detecting possible malware, it doesn't clean up any infections. For that, you'll need an additional Surfright product, which costs money. However, if Hitman Pro does ever detect an issue on your PC, you get a 30-day free trial of Surfright's clean-up tool.  Read More