Top Alternatives to Windows Defender

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.

Malwarebytes Anti-Malware is a leading cybersecurity solution designed to detect and remove malware, including viruses, spyware, ransomware, and other online threats. It offers real-time protection, heuristic detection, and a lightweight design to safeguard your digital life without compromising performance.

Spybot - Search & Destroy is a comprehensive free malware removal tool designed to protect your system from a wide range of threats including spyware, adware, rootkits, and other malicious software. It offers powerful scanning and removal capabilities to keep your computer clean and secure.

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.

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.

Comodo Internet Security (CIS) is a comprehensive freemium security suite offering robust protection against a wide range of online threats, including viruses, malware, and spyware. It integrates powerful antivirus, firewall, and sandbox technologies to safeguard your digital life.

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.

AdwCleaner is a free Windows utility designed to detect and remove unwanted software, specifically focusing on adware, potentially unwanted programs (PUPs), browser toolbars, and hijackers. It's a simple yet powerful tool for cleaning up a cluttered and potentially compromised system.

Kaspersky Anti-Virus is a robust security solution providing essential protection against a wide range of cyber threats, including malware, viruses, and ransomware. It utilizes advanced technologies for real-time scanning and proactive defense to keep your PC safe.

ClamWin is a free and open-source antivirus program for Microsoft Windows. It utilizes the Clam AntiVirus engine and offers on-demand scanning and scheduled scans, making it a lightweight and portable security solution.

SUPERAntiSpyware is a powerful security application designed to detect and remove a wide range of malicious software, including spyware, adware, trojans, and rootkits, offering robust protection against emerging threats.

Panda Antivirus is a comprehensive security suite providing robust real-time protection against a wide range of online threats. It leverages advanced heuristic and zero-day detection technologies to keep your devices safe. Key features include a built-in VPN, parental controls, and a USB drive cleaner, offering layered security beyond just traditional antivirus.

Kaspersky Internet Security provides comprehensive protection against viruses, malware, phishing, and online threats. It includes a firewall, anti-spyware, and features for secure online banking and shopping, offering a robust defense for your digital life.

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.

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.

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.

herdProtect is a free, cloud-based malware scanning platform utilizing the power of over 68 leading anti-malware engines simultaneously. It provides a second layer of defense to detect threats missed by your primary security software, offering comprehensive scanning without interfering with your existing protection.

Dr.Web CureIt! is a free, portable antivirus and anti-malware utility designed to scan and disinfect a computer without installation. It's ideal for one-time scans on potentially infected systems, offering powerful detection engines and heuristic analysis to identify threats.

Immunet FREE Antivirus is a cloud-based security solution designed to provide real-time antimalware and antivirus protection. Leveraging the power of the cloud, it offers fast detection and protection against emerging threats without significantly impacting system performance.

Kaspersky Virus Removal Tool is a free, standalone utility designed to effectively scan and remove viruses, Trojans, and other malicious software from infected Windows systems. It's a portable tool that doesn't require installation and can be run alongside existing antivirus software.

Emsisoft Anti-Malware offers robust real-time protection against evolving online threats using a dual-engine scanner and behavior monitoring, ensuring comprehensive security without compromising system performance.

Spyware Terminator is a comprehensive, free security suite providing robust anti-spyware and antivirus protection. It features real-time scanning, heuristic detection, and an optional integrated antivirus engine to safeguard against various malware threats.

Emsisoft Emergency Kit is a free, portable collection of powerful anti-malware tools that helps you scan, detect, and clean up infections on Windows computers without requiring installation. It's designed for emergency situations where existing security software may have been disabled or compromised.

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.

Avast! Pro Antivirus offers robust protection against malware, including viruses, spyware, and ransomware, with advanced features like a sandbox for safe file execution and real-time protection. It's designed to provide comprehensive security for your digital life.

Zemana AntiMalware is a powerful security solution offering real-time protection against a wide range of threats including malware, ransomware, spyware, and adware. Its cloud-based scanning engine and lightweight design provide effective and fast protection without impacting system performance.

Ad-Aware Free Antivirus+ by Lavasoft provides essential protection against malware and spyware threats for Windows users. It combines antivirus and anti-spyware capabilities with real-time monitoring and browser protection.