ClamAV
ClamAV is an open-source antivirus engine designed for detecting malware, viruses, trojans, and other malicious threats, primarily on Unix-like systems but with cross-platform support. It is widely used for email scanning, file scanning, and web scanning in server environments, providing a command-line scanner, a multi-threaded daemon, and a library for integration into other applications. As a free and community-driven project, it offers signature-based detection and regular updates through its virus database.
Developers should learn and use ClamAV when building or maintaining systems that require malware scanning, such as email servers, file upload services, or web applications handling user-generated content, to enhance security without licensing costs. It is particularly valuable in Linux-based server environments, DevOps pipelines for automated scanning, and open-source projects where budget constraints or transparency are priorities, offering a reliable alternative to commercial antivirus solutions.