ClamAV® serves as the leading open-source solution for scanning at mail gateways. It features a multi-threaded scanning daemon, command-line tools for immediate file analysis, and capabilities for automatic updates of virus signatures. Supporting a wide array of file types and signature languages, ClamAV also allows for unpacking of files and archives. Users can access various compatible versions of ClamAV tailored to their operating systems. As an open-source antivirus engine, ClamAV® is designed to identify threats such as trojans, viruses, and malware across multiple environments, including email systems, web applications, and endpoint security measures. Additionally, it offers a range of tools, comprising an efficient multi-threaded daemon, a command-line scanner for user convenience, and a sophisticated mechanism for keeping its database current. The software also natively supports numerous archive formats, which encompass ZIP, RAR, Dmg, Tar, GZIP, BZIP2, OLE2, Cabinet, CHM, BinHex, SIS, and more, thereby enhancing its versatility and capability in threat detection. This extensive compatibility with different file formats makes ClamAV not only effective but also a reliable choice for various scanning needs.