Independent testing on all the major virus scanners / antivirus software tests / AMTSO

Two sets of guidelines covering principles for testing security software for performance and testing entire security suites were adopted by the Anti-Malware Testing Standards Organization (AMTSO).

http://www.amtso.org/

AV-Test.org and Virus Bulletin

Virus Bulletin, AV-Comparatives, West Coast Labs and ICSA Labs, AV-Test.org

http://www.amtso.org/members.html