ClamAV is described as 'Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. It provides a number of utilities including a flexible and scalable multi-threaded daemon, a command line scanner and advanced tool for automatic' and is a very popular Anti-Virus app in the security & privacy category. There are more than 50 alternatives to ClamAV for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet apps. The best ClamAV alternative is Malwarebytes Anti-Malware, which is free. Other great apps like ClamAV are Avast Free Antivirus, Microsoft Defender, Bitdefender Antivirus and Kaspersky AntiVirus.