Avast Free Antivirus 5.1.889 - Antivirus or anti-virus software is used to prevent, detect, and remove computer viruses, worms, and trojan horses. It may also prevent and remove adware, spyware, and other forms of malware

Antivirus Avast 5 Final - Antivirus or anti-virus software is used to prevent, detect, and remove computer viruses, worms, and trojan horses. It may also prevent and remove adware, spyware, and other forms of malware