The Best Open Source GlassWire AlternativesTop Network Monitors & Firewalls like GlassWire

The best open source alternative to GlassWire is Portmaster. If that doesn't suit you, our users have ranked more than 50 alternatives to GlassWire and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to GlassWire are simplewall, Fort Firewall, TrafficMonitor and Sniffnet.

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Alternatives list

  1. Portmaster icon
     185 likes

    Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.

    37 Portmaster alternatives

    Cost / License

    Application types

    Platforms

    • Windows
    • Linux
     
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    4
  2. simplewall icon
     206 likes

    Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.

    37 simplewall alternatives

    Cost / License

    Application types

    Platforms

    • Windows
     
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    5
  3. TrafficMonitor icon
     64 likes

    Shows real-time network speed, CPU, and memory usage on Windows via a floating window or taskbar widget. Features customizable skins, historical traffic stats, resource monitoring, and lightweight operation for home or advanced users. Free and open-source.

    57 TrafficMonitor alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
     
  4. TinyWall icon
     62 likes

    TinyWall is a free software to harden and control the advanced firewall built into Windows Vista, Windows 7 and Windows 8. TinyWall includes a combination of features that sets it apart from both commercial and freeware firewalls: TinyWall does not annoy you with popups at all...

    32 TinyWall alternatives

    Cost / License

    Application type

    Platforms

    • Windows
     
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    2
  5. OpenSnitch icon
     43 likes

    OpenSnitch is a GNU/Linux application firewall.

    37 OpenSnitch alternatives

    Cost / License

    Application types

    Platforms

    • Linux
     
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    1
  6. Minimal Firewall is a portable Windows firewall frontend that alerts users to internet connections without requiring custom kernel modifications or disabling core isolation, striking a balance between TinyWall's security and SimpleWall's functionality.

    35 Minimal Firewall alternatives

    Cost / License

    Application types

    Platforms

    • Windows
     
  7. BitMeter OS icon
     38 likes

    BitMeter OS keeps track of how much you use your internet/network connection, and allows you to view this information in a variety of ways.

    38 BitMeter OS alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
     
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    2
12 of 27 GlassWire alternatives