Microsoft Defender Alternatives

Microsoft Defender is described as 'Windows Security (known as Windows Defender Antivirus before Windows 10 May 2020 Update, Windows Defender before Windows 10 Creators Update, or Microsoft Defender Antivirus before Windows 11) is an anti-malware component of Microsoft Windows' and is a very popular Anti-Virus app in the security & privacy category. There are more than 100 alternatives to Microsoft Defender for a variety of platforms, including Windows, Mac, Android, Android Tablet and Linux apps. The best Microsoft Defender alternative is Malwarebytes Anti-Malware, which is free. Other great apps like Microsoft Defender are ClamvAV, Avast Free Antivirus, Spybot - Search & Destroy and Bitdefender Antivirus.

filter to find the best alternatives

Microsoft Defender alternatives are mainly Anti-Virus Apps, but if you're looking for Anti-Malware Apps or Firewalls you can filter on that. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Microsoft Defender.
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Windows Security (known as Windows Defender Antivirus before Windows 10 May 2020 Update, Windows Defender before Windows 10 Creators Update, or Microsoft Defender Antivirus before Windows 11) is an anti-malware component of...

More about Microsoft Defender
Microsoft Defender alternatives page was last updated Jun 12, 2025
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  1. Kapitano icon
     1 like
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    I be Kapitano, yer fearless captain o' the digital seas — a trusty malware hunter set to keep yer Linux shipshape from foul threats!

    50 Kapitano alternatives

    License model

    • FreeOpen Source

    Platforms

    • Linux
    • Flathub
    • Flatpak

    Properties

    1.  Privacy focused

    Features

    1.  Works Offline
    2.  No registration required
    3.  No Tracking
    4.  Ad-free

    Kapitano VS Microsoft Defender

     
  2. Copy a direct link to this comment to your clipboard

    Millions of users worldwide rely on Spyware Terminator, winner of many awards and high ratings from industry experts and users. Its free comprehensive protection is comparable to competitors' paid versions!

    License model

    • FreemiumProprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Windows
    Discontinued

    The program seems to be no longer updated. Last version, released in 2015, can be still downloaded from the official website.

    Spyware Terminator VS Microsoft Defender

     
  3. Copy a direct link to this comment to your clipboard

    Twister Antivirus integrates almost all of top class security technology such as Proactive Defense, Virtual Machine, Heuristic, iGene, Blackbox, Rollback and Cloud Security etc. It has unparalleled defense capability to against Viruses, Trojans, Spyware and other all kinds of...

    License model

    Country of Origin

    • CN flagChina

    Platforms

    • Windows

    Twister Antivirus VS Microsoft Defender

     
  4. Copy a direct link to this comment to your clipboard

    Antivirus software can be very hard to use, it often slows down your computer and seems to be built by engineers for engineers. Digital defender antivirus is designed to be the opposite: easy to use, extremely fast and it should never slow down your computer.

    License model

    • FreemiumProprietary

    Platforms

    • Windows

    Properties

    1.  Lightweight

    Features

    1.  Malware Analysis
    2.  Multiple languages
    3.  Real-time protection
    4.  Heuristic Detection

    Digital Defender VS Microsoft Defender

     
  5. AntiSpy icon
     1 like
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    AntiSpy is a free but powerful anti virus and rootkits toolkit.It offers you the ability with the highest privileges that can detect,analyze and restore various kernel modifications and hooks.

    License model

    • FreeOpen Source

    Application type

    Platforms

    • Windows
    Discontinued

    The last update is from 2021.

    AntiSpy Features

    1.  Hex Editor
    2.  Disassembler
    3.  Built-in File Manager

    AntiSpy VS Microsoft Defender

     
  6. iVerify icon
     2 likes
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    ¡Verify Basic is your gateway to enhanced device security and threat awareness, offering a glimpse into the powerful capabilities of our enterprise-grade solution, iVerify EDR. Designed for individuals who prioritize their digital security

    License model

    • FreemiumProprietary

    Country of Origin

    • US flagUnited States

    Platforms

    • iPhone
    • iPad
    • Android

    iVerify VS Microsoft Defender

     
  7. Copy a direct link to this comment to your clipboard

    Preventon’s antivirus software removes and protects you against the latest strains of viruses, malware, worms, Trojans and more. With Preventon Free, you are protected against cyber threats attempting to gain access to your PC.

    License model

    • FreemiumProprietary

    Platforms

    • Windows

    Preventon Antivirus Features

    1.  Malware Analysis
    2.  Real-time protection

    Preventon Antivirus VS Microsoft Defender

     
  8. FreeFixer icon
     3 likes
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    FreeFixer is a general purpose removal tool which will help you to delete potentially unwanted software, such as adware, spyware, trojans, viruses and worms.

    License model

    • FreemiumProprietary

    Platforms

    • Windows

    FreeFixer Features

    1.  Portable

    FreeFixer VS Microsoft Defender

     
  9. Raspirus icon
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    Sometimes you work on a computer that is not connected to the internet. It even has no antivirus installed, and you guess you are safe. But it could be used by a lot of people that upload and download files using their personal USB sticks.

    License model

    • FreeOpen Source

    Platforms

    • Mac
    • Windows
    • Linux

    Raspirus Features

    1.  Ad-free
    2.  Rust
    3.  Cross-Platform

    Raspirus VS Microsoft Defender

     
  10. iAntiVirus icon
     3 likes
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    With iAntiVirus you are protected against the most nefarious cyber-threats attempting to gain access to your Mac and personal information.

    License model

    • Free PersonalProprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac

    iAntiVirus VS Microsoft Defender

     
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