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Best Personal firewalls in 2026

Personal firewall software helps you manage network access on devices. This list is for people comparing tools for Windows, macOS, Android, web or Linux.

  1. 1

    OpenSnitch

    Free plan Open source LinuxSelf-hosted
    8.6 Free plan Visit site
  2. 2

    GlassWire

    by GlassWire
    Free plan AndroidWebWindows

    GlassWire combines traffic visibility with firewall controls, while its Android app focuses on app data use and connections.

    7.5 Free plan · paid from $2.99/mo (annual) Visit site
  3. 3

    AFWall+

    Free plan Android
    7.3 Free plan Visit site
  4. 4

    Firewall App Blocker

    Free plan Windows
    7.2 Free plan Visit site
  5. 5

    LuLu

    Free plan Mac

    LuLu offers outgoing-connection alerts and configurable allow or block rules at no cost. Its visibility is not complete for traffic that bypasses macOS Network Extensions.

    7.1 Free plan Visit site
  6. 6

    Portmaster

    Free plan LinuxMacWindows
    7.1 Free plan · paid from €8/mo Visit site
  7. 7

    Murus

    by Murus
    Free plan Mac
    7.0 Free plan · paid from $10 Visit site
  8. 8

    NetLimiter

    Free plan Windows

    NetLimiter combines detailed Windows traffic monitoring with speed controls, quotas, filters, and blocking rules.

    6.9 28-day trial Visit site
  9. 9

    RethinkDNS

    Free plan AndroidWeb

    RethinkDNS combines DNS filtering with Android firewall controls and connection reporting. Its blocking is not universal, and RPN is a separate paid offering.

    6.9 Free plan Visit site
  10. 10

    simplewall

    Free plan Windows
    6.7 Free plan Visit site
  11. 11

    TinyWall

    Free plan Windows

    TinyWall offers firewall controls and connection visibility for supported Windows desktops.

    6.6 Free plan Visit site
  12. 12

    ZoneAlarm Free Firewall

    by ZoneAlarm Free Firewall
    Free plan Windows
    6.5 Free plan Visit site
  13. 13

    NetGuard

    by Marcel Bokhorst
    Free plan Android
    6.2 Visit site
  14. 14

    Little Snitch

    by Little Snitch
    Free trial Mac

    Little Snitch gives Mac users detailed control over outgoing connections, traffic history, rules, and DNS encryption.

    6.0 From €59 · 30-day trial Visit site
  15. 15

    Radio Silence

    Free trial Mac
    5.7 From $9 · 1-day trial Visit site
  16. 16

    Vallum

    by Vallum
    Free trial Mac
    5.5 From $15 · 15-day trial Visit site
  17. 17

    Windows Defender Firewall

    by Microsoft
    Paid Windows
    3.8 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare supported platforms, free plans, trial periods and prices. If reading or changing code matters, check the open-source licence before choosing. Also check whether a tool fits your device and budget.

Questions

Do these personal firewalls have free plans?

Yes. AFWall+, Firewall App Blocker, LuLu, NetGuard, OpenSnitch, Portmaster and RethinkDNS list free plans.

Which tools list trials?

NetLimiter lists a 28-day trial. Radio Silence lists a 1-day trial.

Which platforms are covered?

Listed platforms include Windows, macOS, Android, web and Linux. NetGuard lists Android support.

Are open-source options available?

Yes. Open-source code is offered by items in this list. Check the licence before reading or changing code.

What paid prices are listed?

Portmaster lists paid service from €8 per month. Radio Silence starts from $9. NetLimiter is paid and lists a 28-day trial.

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