Antivirus or anti-virus software is used to prevent, detect, and remove malware, including but not limited to computer viruses, computer worm, trojan horses, spyware and adware.
Source: ww.wikipedia.org
Below are the most commoly used and free antiviruses. Remember that ANY antivirus is useless if run OUTDATED.
Avira
Avast
AVG
Kaspersky
Norton
PC Tools Antivirus
