Best free antivirus software for Windows Why we like it: Initially, I hesitated to include Windows Security on this list because I assumed the first-party software wouldn't be very good.

Yes, there are several 100% free antivirus programs available, including built-in antivirus software on Windows and MacOS devices, like Microsoft Defender and XProtect.

Enter Avira, another top-tier AV that has a powerful free version as well as a paid one that extends its capabilities further ...

In conclusion, TotalAV is a more powerful overall tool. It is easy to use and comes with competitive pricing compared to its ...

Microsoft Defender is the best antivirus for the average Windows user, as it comes automatically enabled and configured to optimize the security of your device on Windows 10 and 11.

Bitdefender GravityZone: Best overall Bitdefender is beloved for its free antivirus software, but its business offerings also deliver exceptional value. The GravityZone platform offers advanced ...

OS support: Windows, Android, macOS | Devices: As many as you like | Free trial: None Best for: Protecting Windows PCs enough to get by. Pros: Strong antivirus protection Can work alongside other ...

NEW YORK, Aug. 1, 2025 /PRNewswire/ -- Software Experts has recognized Avast as a top antivirus for Windows 10 in 2025*. The award highlights Avast Premium Security and Avast Ultimate for their strong ...

“Microsoft Defender is surprisingly effective for free antivirus software, and with a Microsoft 365 subscription, you get Defender apps for macOS, iOS, and Android.” It’s clear that everyone ...

Malwarebytes offers one of the best free antivirus options you can find, but there are others to choose from. Most of us need a more robust solution that can prevent malware before it reaches our ...