Avira AntiVir is a set of antivirus software developed by the German company Avira.Avira has a free personal version in addition to the commercial version. Its interface is not so flashy, and there is no gimmick and useless redundant items. It is a well-known free antivirus software, more than 70 million users, it rewrites many people "free antivirus software must be worse" concept, in the system scan, real-time protection, automatic update, etc., the performance is not inferior to the well-known paid antivirus software, and even higher than some commercial antivirus software, so it has become many users to choose Anti-virus software of choice for many users.