The Best Open Source Avast Free Antivirus AlternativesTop Anti-Malware & Anti-Virus Apps like Avast Free Antivirus

The best open source alternative to Avast Free Antivirus is ClamAV. If that doesn't suit you, our users have ranked more than 100 alternatives to Avast Free Antivirus and 16 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Avast Free Antivirus are Tron Script, ClamWin, ClamTk and LoveLaceAV.

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Avast Free Antivirus alternatives are mainly Anti-Virus Apps, but if you're looking for Anti-Malware Apps or System Cleaners you can filter on that. Other popular filters include Android + Free, Windows + Free, Free, Open Source, Windows and Mac + Open Source. These are just examples - use the filter bar below to find more specific alternatives to Avast Free Antivirus.
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Alternatives list

  1. ClamAV icon

    ClamAV

     248 likes
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    Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. It provides a number of utilities including a flexible and scalable multi-threaded daemon, a command line scanner and advanced tool for automatic...

    98 ClamAV alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    ClamAV GUI
     
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    25

    • Almost everyone thinks ClamAV is a great Avast Free Antivirus alternative.

    • ClamAV is the most popular Linux alternative to Avast Free Antivirus.

    • ClamAV is the most popular Open Source alternative to Avast Free Antivirus.

    • ClamAV is Free and Open SourceAvast Free Antivirus is Freemium and Proprietary
    • ClamAV is Lightweight and Privacy focusedAvast Free Antivirus is not according to our users
  2. Tron Script icon

    Tron Script

     36 likes
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    Tron is a collection of programs, tools, utilities, and Windows functions that are all scripted together. Those programs and such are designed to remove malware and bloatware, repair damaged operating systems, update old versions of very common applications, free up drive space...

    167 Tron Script alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Windows
    Tron Script screenshot 1
     
  4. ClamWin icon

    ClamWin

     122 likes
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    ClamWin is a free, open-source antivirus software for Microsoft Windows, using the ClamAV engine. It has an easy-to-use installer and its source code is publicly available. It features high detection rates for viruses and spyware, a scanning scheduler, and automatic updates of...

    65 ClamWin alternatives

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Windows
    • PortableApps.com
    Configuration Screen
     
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    1
    10
    Comments about ClamWin as an Alternative to Avast Free Antivirus
    GPL_is_freedom
    Positive
    0

    it uses the gpl license which promotes your freedom. it is free but not as in price but as in freedom

    Avast Free Antivirus Icon
    ClamWin icon

    • Almost everyone thinks ClamWin is a great Avast Free Antivirus alternative.

    • ClamWin is Free and Open SourceAvast Free Antivirus is Freemium and Proprietary
    • ClamWin is Lightweight and Privacy focusedAvast Free Antivirus is not according to our users
  5. ClamTk icon

    ClamTk

     73 likes
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    ClamTk is a graphical front-end for ClamAV, an open source antivirus engine for detecting trojans, viruses, malware & other malicious threats. It is designed to be an easy-to-use, lightweight, on-demand antivirus scanner for Linux systems.

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Linux
    ClamTk screenshot 1
     
  6. LoveLaceAV icon

    LoveLaceAV

     9 likes
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    LoveLaceAV is a Hypatia fork, FOSS malware scanner for Android. It is powered by ClamAV style signature databases.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Android
    • F-Droid
     
  9. Kapitano icon

    Kapitano

     3 likes
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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!

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Kapitano screenshot 1
     
  10. zipbomb icon

    zipbomb

     3 likes
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    Upload any file and we'll try to figure out if it's a zipbomb/zipbomb detector & archive

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    zipbomb screenshot 1
     
  11. LibreAV icon

    LibreAV

     5 likes
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    Anti-malware for Android using machine learning. Contribute to projectmatris/antimalwareapp development by creating an account on GitHub.

    Cost / License

    • Free
    • Open Source

    Application types

    Alerts

    • Discontinued

    Platforms

    • Android
    • Android Tablet
     
  12. Clam Sentinel icon

    Clam Sentinel

     10 likes
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    Clam Sentinel is a system tray application that detects file system changes and scans modified files using ClamWin . It also detects new devices (like USB flash drive) and monitors them until the program is closed or until the device is...

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    Clam Sentinel screenshot 1
     
  13. Download Virus Checker icon

    Download Virus Checker

     4 likes
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    Download Virus Checker provides automatic check for all your downloads through 68 online anti-virus solutions. Basically the extension sends your download link to VirusTotal service and wait for its response.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • Google Chrome
    • Opera
    • Firefox
    Download Virus Checker screenshot 1
     
  14. CS Anti-Virus icon

    CS Anti-Virus

     2 likes
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    Provide real time shield, process/memory scanner, file/path scanner, scheduled scans, automatic daily update and use the ClamAV database with over 720.000 virus signatures. CS Anti-Virus with the ClamAV engine is FREE. (GNU/GPL license).

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    CS Anti-Virus screenshot 1
     
12 of 16 Avast Free Antivirus alternatives