Both Avast and Bitdefender originally built their reputations on their high-quality, free solutions. Even though they've both grown into professional-grade security companies, they still offer ...

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.

Bitdefender Antivirus Free scans and cleans your system using only the resources that you, your software or your operating system are not using, thus achieving near-zero impact on your activities.

Antivirus apps protect your PC's personal information, data, bank accounts, and other sensitive information. We've tested more than two dozen utilities to help you choose the right antivirus for your ...

Bitdefender Antivirus Free scans and cleans your system using only the resources that you, your software or your operating system are not using, thus achieving near-zero impact on your activities.

Bitdefender antivirus plans and pricing If you only want antivirus software to protect a single Windows computer, you can choose the free version of Bitdefender Antivirus. Bitdefender also offers a ...