Multiple AV engines

I'm aware that we have many AV products which use dual or triple engine scanning system like F-secure, G-data, Zone Alarm etc...

It would be nice to have complete list of all AV-s which use integrated dual or triple engine scanning system with names of their engines.

Thanks

 

TrustPort is one of them.

 

Avast/G-data.

 

A-Squared = Ikarus & Emsi

 

MS Antigen depending on suite chosen includes Microsoft, CA InoculateIT, Norman, Sophos, Authentium, Kaspersky, VirusBuster, and AhnLab.
http://www.microsoft.com/antigen/

NuWave Multicore AV includes AVG,Sunbelt,Lavasoft,F-Prot and Norman.
http://www.nuwavesoft.com/

 

a-squared - Anti-Malware Engine
Ikarus - Anti-Virus Engine

 

G-DATA= Avast +BitDefender

 

Using multiple engines is not a problem if they work good together, they use a bit more memory and cpu then the single engine ones.
In theory AV's with multiple engines are more likely to catch something then single engine AV's.... but that is in theory, in real life it is a pure gamble.