Malwarebytes
Avira Antivirus
ClamAV
Spybot - Search & Destroy
Bitdefender Antivirus
Kaspersky AntiVirus
ESET NOD32 Antivirus
Easy-to-use online protection for you, your family, and your devices with the Microsoft Defender app, now available for download with your Microsoft 365 subscription.

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Website, pricing, platforms and company facts side by side.
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What each product offers, as listed by its team.

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NEW Microsoft Defender Preview vs Windows Defender - what's the difference?
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When comparing Microsoft Defender and Diffee, you can also consider the following products.

Malwarebytes protects you against malware, ransomware, and other advanced online threats that have made antivirus obsolete and ineffective. Free Anti-Malware & Malware .
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Download Avira Free Antivirus 2018 and get award-winning PC protection, including next-gen security against ransomware and other threats. Download for free
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Application and Data, Application Utilities, and Security
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Spybot Search & Destroy is an anti-malware, adware and antivirus program for safe removal of the threats from the PC and browser.
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Free Antivirus Software - Download Bitdefender Antivirus Free
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Download the best FREE antivirus for Windows-based desktops, laptops, & tablets and get the core protection against viruses, spyware, phishing & dangerous websites.
Compare Kaspersky AntiVirus to Microsoft Defender or Diffee: