List of Free Antivirus for Commercial use in Corporate and Business

"Fortunately there are quite a number of reputable and popular antivirus companies such as AVG, Avast, Avira, Ad-Aware, ZoneAlarm etc, that offers a freeware version of their antivirus software for computer users to install and protect their computer from malware."

http://www.raymond.cc/blog/free-antivirus-for-corporate-commercial-and-e...