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Microsoft Defender — Antivirus (Free)

Microsoft Defender is a free Antivirus solution from Microsoft. Compare it against 53 other Antivirus tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is Microsoft Defender?

Microsoft Defender is free to use — there is no purchase cost for the core product, so you can evaluate and roll it out without upfront spend. It is categorised under Antivirus and published by Microsoft. Buyers typically evaluate Microsoft Defender when they need a dependable Antivirus option and want to weigh the trade-offs between free, open-source and paid tools before committing.

Microsoft Defender alternatives

If Microsoft Defender isn't the right fit, compare these Antivirus alternatives side by side:

AVG AntiVirusAhnLab V1Avast AntivirusAviraAvira (AntiVir)BitdefenderBromiumBullGuardCarbon BlackClamAVClamTkComodo AntivirusComodo Cloud AntivirusComodo Rescue Disk

Frequently asked questions

Is Microsoft Defender free?
Yes. Microsoft Defender is free to use, with no purchase cost for the core product.
What are the best Microsoft Defender alternatives?
Popular Antivirus alternatives to Microsoft Defender include AVG AntiVirus, AhnLab V1, Avast Antivirus, Avira. See the full list of Antivirus on FreeSoftwareX.
What type of software is Microsoft Defender?
Microsoft Defender is a free Antivirus tool developed by Microsoft.

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