Microsoft Defender isn't bad, but it's not enough to fully protect your PC. You don't have to pay extra, though—just use one of the top free antivirus apps we've tested.

Having an antivirus app on Windows is a must. While Windows Defender is certainly an option, Consumer Reports rates these ...

Avira is a cybersecurity company known for its freemium antivirus softeware and safe browsing tools. Its consistently high performance in third-party testing has earned it places on both our best ...

Avira stays simple, but that has limits. This 2026 review examines its protection, free vs paid versions, and real-world use on desktop and mobile.