Best Free Antivirus for Windows in 2026
Aug 28, 2026
Windows Defender is decent, but a dedicated scanner adds a real layer of safety. These free antivirus tools consistently score well and won't cost you a thing.
Avast Free Antivirus
Avast Free Antivirus pairs strong detection with a clean interface and useful extras like a Wi-Fi inspector.
AVG AntiVirus Free
AVG AntiVirus shares Avast's engine with a lighter, simpler UI — a solid set-and-forget option.
Avira Free Security
Avira is light on resources and bundles a VPN and PC cleaner into its free tier.
Bitdefender
Bitdefender routinely tops independent lab tests for protection with very low system impact.
On-demand cleanup: Malwarebytes
Already infected? Run Malwarebytes alongside your antivirus as a powerful second-opinion scanner.
See more in the Security & VPN section.