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Antimalware you can use at no cost: free antivirus and the free tiers of paid products, for people protecting their own devices.

How this list is ordered →

— means not known; · not tested; blank: does not apply to that kind of product; ✕ a sourced assertion of absence. These are four different things. The dot after each value shows freshness, and ⓘ opens the evidence.

Products
30
Vendors
22
AV-TEST
5/30
AV-Comparatives
5/30
SE Labs
2/30
OPSWAT Certification
11/30
Find by situation✓ Completely freeFree now, upgrade laterFor a phone or tabletFor a MacAwarded by a labFree with no paid tier to upgrade into. The filters are set in the column headers below — change them freely.
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A product tested on several platforms is judged on its average. Products the lab did not measure are left out — not tested is not a low score.

AV-Comparatives
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Protection

System Impact

A product tested on several platforms is judged on its average. Products the lab did not measure are left out — not tested is not a low score.

SE Labs
Filter

A product tested on several platforms is judged on its average. Products the lab did not measure are left out — not tested is not a low score.

  • Windows Defender

    MicrosoftUnited States

    Revenue $331.8B (2026)Support 153 countriesFounded 1975

    Details
    AV-TEST
    WindowsProt 6·Perf 5.5·Usab 6
    AV-Comparatives
    Advanced+·Prot 99%·False 0Real-World Protection Test
    System impactAdvanced·Impact 13.5·AV-C 80/90
    SE Labs
    AAA·Total 98%Home Anti-Malware Protection
    OPSWAT
    Platinum
    Price
    Free
    Platforms
    WindowsWindows Server

  • AVG AntiVirus Free

    AVG Technologies CZCzechia

    Revenue ≈ $77.0M (2016)Support 2 countriesFounded 1991

    Details
    AV-TEST
    AndroidProt 6·Perf 6·Usab 6
    AV-Comparatives
    Advanced+·Prot 99.3%Real-World Protection Test
    System impactAdvanced+·Impact 5.3·AV-C 90/90
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    macOSWindows

  • Avira Free Security

    AviraGermany

    Revenue ≈ $75.6M (2017)Support 4 countriesFounded 1986

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Advanced+·Prot 99.5%·False 6Real-World Protection Test
    System impactWindowsImpact 23·AV-C 80/90
    SE Labs
    Not tested
    OPSWAT
    Platinum
    Price
    Free
    Platforms
    AndroidiOSmacOSWindows

  • Panda Free Antivirus

    Panda Security, S.L.Spain

    Revenue ≈ $60.8M (2023)Support 9 countriesFounded 1990

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Tested·Prot 97.4%·False 16Real-World Protection Test
    System impactWindowsImpact 11.6·AV-C 85/90
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    AndroidLinuxmacOSWindows

  • Bitdefender Antivirus Free

    BitdefenderRomania

    Revenue ≈ $363.0M (2024)Support 12 countriesFounded 2001

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Gold
    Price
    Free
    Platforms
    Windows

  • AhnLab V3 Lite

    AhnLabSouth Korea

    Revenue ≈ $195.4M (2025)Support 3 countriesFounded 1995

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • ALYac

    ESTsecuritySouth Korea

    Revenue ≈ $17.7M (2023)Support 1 countriesFounded 2017

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • Bitdefender Virus Scanner

    BitdefenderRomania

    Revenue ≈ $363.0M (2024)Support 12 countriesFounded 2001

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    macOS

  • Bkav Home

    BkavVietnam

    Revenue ≈ $8.0M (2019)Support 1 countriesFounded 1995

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Not known

  • Dr.Web Light

    Doctor WebRussia

    Revenue ≈ $12.6M (2021)Support 4 countriesFounded 1992

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    AndroidmacOS

  • Gatekeeper

    AppleUnited States

    Revenue $416.2B (2025)Support 76 countriesFounded 1976

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    macOS

  • McAfee Security Scan Plus

    McAfeeUnited States

    Revenue $1.9B (2021)Founded 1987

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • Panda Cloud Cleaner

    Panda Security, S.L.Spain

    Revenue ≈ $60.8M (2023)Support 9 countriesFounded 1990

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • Rakeen Security Suite

    RakeenSaudi Arabia

    Support 1 countriesFounded 2024

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    AndroidiOSmacOSWindows

  • Xprotect

    AppleUnited States

    Revenue $416.2B (2025)Support 76 countriesFounded 1976

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    macOS

  • ZoneAlarm Free Antivirus + Firewall

    Check Point Software TechnologiesIsrael

    Revenue $2.7B (2025)Support 50 countriesFounded 1993

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • avast! Free Antivirus

    AVAST Software a.s.Czechia

    Revenue $892.9M (2020)Support 2 countriesFounded 1988

    Details
    AV-TEST
    WindowsProt 6·Perf 6·Usab 6
    AV-Comparatives
    Advanced+·Prot 99.3%Real-World Protection Test
    System impactAdvanced+·Impact 5.2·AV-C 90/90
    SE Labs
    AAA·Total 98%Home Anti-Malware Protection
    OPSWAT
    Platinum
    Price
    Free
    Platforms
    LinuxWindows

  • Avast Mac Security

    AVAST Software a.s.Czechia

    Revenue $892.9M (2020)Support 2 countriesFounded 1988

    Details
    AV-TEST
    macOSProt 6·Perf 6·Usab 6
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Gold
    Price
    Free
    Platforms
    macOS

  • Avast One Essential

    AVAST Software a.s.Czechia

    Revenue $892.9M (2020)Support 2 countriesFounded 1988

    Details
    AV-TEST
    AndroidProt 6·Perf 6·Usab 6
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • Tencent PC Manager

    TencentChina

    Revenue ≈ $105.2B (2025)Support 22 countriesFounded 1998

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Gold
    Price
    Free
    Platforms
    Windows

  • 360安全卫士

    Qihu 360 SoftwareChina

    Revenue ≈ $1.2B (2025)Support 1 countriesFounded 2005

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows

  • 360杀毒

    Qihu 360 SoftwareChina

    Revenue ≈ $1.2B (2025)Support 1 countriesFounded 2005

    Details
    AV-TEST
    Not tested
    AV-Comparatives
    Not tested
    SE Labs
    Not tested
    OPSWAT
    Not known
    Price
    Free
    Platforms
    Windows
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