AVG AntiVirus FREE is one of the best antivirus apps for Windows 7 because it provides your Windows 7 PC with comprehensive protection against malware, exploits, and other threats. And though Microsoft no longer supports Windows 7 with security updates, we're always updating AVG AntiVirus FREE to protect you against the latest threats.
I will not recommend to use AVG because I don't have good experience with this program and it can slow down my PC. AVG antivirus free is good antivirus, free version includes Ransomware Protection,data shredder, network protection. Microsoft Defender is built in free antivirus,most people don't need third parties antivirus. .