Microsoft Security Essentials Alternatives for Mac OS X

Avast Free Antivirus offers robust and free protection against viruses, malware, spyware, and phishing threats. It provides real-time scanning, browser protection, and several advanced security features to keep your system safe without impacting performance.

Avira Antivirus offers robust real-time protection against a wide array of digital threats including viruses, malware, spyware, and ransomware. Known for its lightweight design and effective scanning engine, it provides essential security features to keep your PC safe without significantly impacting performance.

AVG Antivirus Free Edition provides essential real-time protection against viruses, malware, spyware, and other online threats. It includes core security features designed to keep your device safe while browsing, downloading, and accessing email.

360 Total Security provides a comprehensive suite of tools to protect your PC from various threats and optimize its performance. It combines multiple antivirus engines with system cleanup and tune-up utilities for a complete security and speed solution.

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.

Dr.Web Anti-virus provides robust protection against a wide array of cyber threats, including viruses, Trojans, spyware, and rootkits. Utilizing heuristic analysis and zero-day protection, it offers real-time monitoring and prevention through lightweight, customizable software that doesn't weigh down system resources.

ClamXAV provides robust anti-malware protection specifically designed for macOS. It effectively scans for and removes a wide range of threats, helping to safeguard your data and system integrity. Ideal for users seeking a dedicated security solution without unnecessary bloat.

F-Secure Anti-Virus provides essential real-time protection against viruses, malware, spyware, and other online threats. It focuses on providing a simple yet effective layer of security for your devices.