When it comes to securing your PC nothing is enough. All right, you've already installed an antivirus tool, a firewall and a antispyware solution, but if you still feel unprotected, then maybe this app is for you.
Comodo BOClean is a security tool that prevents any kind of malware from infecting your computer. This includes Trojan horses, keyloggers, rootkits, hijackers and other nasty creatures. The program stays out of sight most of the time, asking for user intervention only in case it detects any threat.
Comod BOClean features pretty self-explanatory configuration settings. On the downside, it doesn't include the option to analyze the system in search of any malware that could have already infected your PC.