Open Source Avast Free Antivirus Alternatives

    The best open source alternative to Avast Free Antivirus is Clam AntiVirus, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Avast Free Antivirus and nine of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Avast Free Antivirus are ClamWin (Free, Open Source), ClamTk (Free, Open Source), Simple Software Restriction Policy (Free, Open Source) and kicom (Free, Open Source).

    The list of alternatives was last updated Mar 30, 2021

    Platforms

    • Windows
    • Mac
    • Android
    • Android Tablet
    • iPhone
    • Linux
    • iPad
    • Online
    • Chrome OS
    • PortableApps.com
    • Kindle Fire
    • Software as a Service (SaaS)
    • Firefox
    • BSD
    • Windows Phone
    • Windows Mobile
    • Symbian S60
    • Blackberry
    • Google Chrome

    Features

    • Real-time protection
    • Heuristic Detection
    • Portable
    • Privacy protection
    • Multiple languages
    • Ad-free
    • Lightweight
    • Parental Control
    • Scanner
    • Multi Engine
    • Cloud based
    • Built-in Firewall
    • Built-in VPN
    • System Cleanup
    • Built-in Antivirus
    • Integrated Virus scanner
    • Game Mode
    • Auto update
    • Real-time

    License

    × Clear
    • Free
    • Open Source
    • Paid
    All Filters

    • Clam AntiVirus is an open source (GPL) anti-virus toolkit for UNIX, designed especially for e-mail scanning on mail gateways. View 97 alternatives to Clam AntiVirus
      Almost everyone thinks Clam AntiVirus is a great alternative to Avast Free Antivirus.
      • FreeOpen Source
      • Mac
      • Windows
      • Linux
      • BSD
    • [Please note that ClamWin Free Antivirus does not include an on-access real-time scanner. You need to manually scan a file in order to detect a virus or spyware. View 69 alternatives to ClamWin
      Most users think ClamWin is a great alternative to Avast Free Antivirus.
      • FreeOpen Source
      • Windows
      • PortableApps.com
      ClamWin vs Avast Free Antivirus
      pros, cons and recent comments
      GPL_is_freedom it uses the gpl license which promotes your freedom. it is free but not as in price but as in freedom
      Positive comment about 1 year ago

      0


    • ClamTk is a graphical front-end for ClamAV, an open source antivirus engine for detecting trojans, viruses, malware & other malicious threats. View 64 alternatives to ClamTk
      • FreeOpen Source
      • Linux
    • Security add-on for Windows. Make it considerably harder for unwanted software to get launched. Not through file signatures but through identifying places where executables have no right to be, for example Documents folders. View 68 alternatives to Simple Software Restriction Policy
      • FreeOpen Source
      • Windows
    • KicomAV is an open source (GPL v2) antivirus engine designed for detecting malware and disinfecting it. View 77 alternatives to kicom
      No screenshots yet
      • FreeOpen Source
      • Windows


    • 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). View 67 alternatives to CS Anti-Virus

      Discontinued

      The program is no longer updated. Last version, 0.1.2b, released in April 2010, can be still downloaded from the official website.

      • FreeOpen Source
      • Windows
    • Clam Sentinel is a system tray application that detects file system changes and scans modified files using ClamWin . View 12 alternatives to Clam Sentinel

      Discontinued

      The program is no longer updated. Last version, 1.22, released in July 2014, can be still downloaded from the official website.

      • FreeOpen Source
      • Windows
    • Winpooch is a watchdog for Windows (2000, XP, 2003, but only 32-bits). It detects modifications in your system, so as to detect a trojan or a spyware installation. View 85 alternatives to Winpooch Watchdog

      Discontinued

      As of 2008-06-13, this project is no longer under active development. Winpooch can be still downloaded from SourceForge.

      • FreeOpen Source
      • Windows
    • Technology Counter in its job has keenly observed the struggles what small industries have gone through with their selection of technology and we are committed to helping them in their hustle. View 2 alternatives to TechnologyCounter
      No screenshots yet
      • FreeOpen Source
      • Online
    Showing 9 of 9 alternatives