Virus Bulletin conducts test of antimalware programs on different operating systems, fx. on W7, W8, Linux…
The summaries are available to everyone, but you have to buy the “full” report.
But after 6 months the “full” report are also available to everyone,
all you need to do is register a (free) account on Virus Bulletin: https://www.virusbtn.com/register/index