ThreatFire AntiVirus Free Edition
Full user review
"Excellent-No update needed"
Frequent ultra lite definition updates,customizable(default is best),low resources-does'nt slow system,rootkitscanner/scheduler, can be used with another product or by itself,very high detection rate.
Could use an antimalware scanner,slightly high memory use at
idle: installed vs uninstalled.
Yes the product has'nt had a program update and does'nt need one.
This is behavior based and works fine as is. Major updates can be
good but cause problems,incompatabilities,bugs,crashes. They can
also install bogus crapware(toolbars,Chrome anyone?)or hound you to buy something. I'm a tech guy who works on PC's and don't want
to bother with all that hassle-but its what I do.