: Highly recommended by Avast as a lightweight scanner that combines AI-powered protection with a fast spyware detector. It is part of the broader Avast One app which includes privacy tools.

: Often used as a secondary scanner. While the free version lacks real-time protection, it is a "must-have" for removing deep-seated malware and spyware that other programs might miss, according to Oasis Christian Fellowship .

: A specialized tool that offers a Free Edition primarily for on-demand scanning and removal of spyware, adware, and trojans. Key Considerations for Free Software

: Most free tools offer basic malware detection. Total Security notes that paid versions typically add features like real-time web monitoring and advanced identity theft protection.

Finding the best free antivirus and spyware software depends on whether you need proactive protection or a tool to clean an existing infection. Experts from EXPERTE.com and Total Security consistently highlight several top-tier options for 2026. Top Rated Free Antivirus & Spyware Software