Bitdefender Antivirus Free Edition Alternatives for Linux

ESET NOD32 Antivirus provides essential protection against malware with a focus on performance and a low system footprint. It features real-time scanning, heuristic detection, and anti-spyware capabilities, ensuring robust defense without hindering your computer's speed.

Clam AntiVirus (ClamAV) is a free, open-source antivirus engine designed for scanning emails, files, and directories for various types of malicious software, including viruses, worms, and Trojans.

ClamTk is a user-friendly graphical interface (GUI) for ClamAV, a widely-used open-source antivirus engine, specifically designed for Linux systems. It provides an easy way to scan for viruses, malware, and other malicious threats without needing to interact with the command line.

COMODO Antivirus provides robust, real-time protection against a wide array of malware, including viruses, worms, Trojans, and zero-day threats. Its free version offers essential security features for Windows users.