German digital-security company Avira may not be as well-known in the U.S. as some of its competition, but its Avira Free Antivirus 2016 gives you a lot for nothing. The software has perfect malware-detection scores, a relatively stripped-down (though sometimes intimidating) interface and a good range of other free tools. It’s our top choice for free PC antivirus solutions.
According to AV-TEST, Avira offers the strongest protection against both widespread and zero-day malware. Its austere interface can be intimidating at first, and computers with less RAM might see a performance impact. However, Avira Free Antivirus’ sheer effectiveness and good range of features — including a mobile portal and child-safety settings — make it the best choice.