GlassWire AlternativesOnly Open Source apps categorised as Network Monitors

The best open source Network Monitor alternative to GlassWire is Portmaster. If that doesn't suit you, our users have ranked more than 50 alternatives to GlassWire and 19 are open source Network Monitors so hopefully you can find a suitable replacement. Other interesting open source Network Monitor alternatives to GlassWire are simplewall, Fort Firewall, TrafficMonitor and OpenSnitch.

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GlassWire alternatives are mainly Network Monitors, but if you're looking for Firewalls or Privacy Tools you can filter on that. Other popular filters include Linux, Mac, Free, Open Source, Android and Windows. These are just examples - use the filter bar below to find more specific alternatives to GlassWire.
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Alternatives list

  1. Portmaster icon

    Portmaster

     182 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
    Dashboard PMv1.4
     
    |
    4
    Portmaster vs GlassWire Comments
    TBayAreaPat
    Positive
    1

    Powerful control for the tech-savvy. More free firewall blocking options than Glasswire, which only allows 2 blocks for free.

    Guest
    Positive
    5

    It's just like glasswire except for the fact that portmaster has more features than glasswire, and it is also for more advanced users.

    Review by a new / low-activity user.
    williamson
    Positive
    0

    It's Open Source and the internals are much better documented, no security tool is perfect but at least here if you're a professional you can see how to works to know what it is and is not capable of. However with GlassWire they just give generic help desk responses whenever you ask questions, either because they don't know or are just trying to cover it up for marketing.

    3 of 4 comments
    • Portmaster is Freemium and Open SourceGlassWire is Freemium and Proprietary
    • Portmaster is Privacy focused, Lightweight and DecentralizedGlassWire is not according to our users
  2. simplewall icon

    simplewall

     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
    Main Window
     
    |
    5
    simplewall vs GlassWire Comments
    Top Positive Comment
    Guest
    3

    It's free, doesn't nag you, and gives you a similar level of control.

    Review by a new / low-activity user.
    Top Negative Comment
    Guest
    -2

    Does not provide network data.

    Review by a new / low-activity user.
    Shayan12500
    Positive
    0

    It's Free and simple to work with.

    3 of 5 comments
    • simplewall is Free and Open SourceGlassWire is Freemium and Proprietary
    • simplewall is Lightweight and Privacy focusedGlassWire is not according to our users
  5. TrafficMonitor icon

    TrafficMonitor

     65 likes

    TrafficMonitor is a network monitoring suspension window software in Windows. It can display the current network speed, CPU and memory usage. It also support the functions of display in the taskbar, change skin and historical traffic statistics.

    59 TrafficMonitor alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Windows
    Taskbar No activity
     
  6. OpenSnitch icon

    OpenSnitch

     43 likes

    OpenSnitch is a GNU/Linux application firewall.

    37 OpenSnitch alternatives

    Cost / License

    Application types

    Platforms

    • Linux
    OpenSnitch screenshot 1
     
    |
    1
    OpenSnitch vs GlassWire Comments
    Guest
    Positive
    1

    application control for linux that's not iptables. perfect.

    Review by a new / low-activity user.
    • OpenSnitch is Free and Open SourceGlassWire is Freemium and Proprietary
    • OpenSnitch is Lightweight and Privacy focusedGlassWire is not according to our users
  7. Sniffnet icon

    Sniffnet

     17 likes

    Sniffnet is a network monitoring tool to help you easily keep track of your Internet traffic.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Sniffnet screenshot 1
     
  10. Minimal Firewall icon

    Minimal Firewall

     11 likes

    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.

    Cost / License

    Application types

    Platforms

    • Windows
    Minimal Firewall screenshot 1
     
  11. NetSpeedTray icon

    NetSpeedTray

     7 likes

    A lightweight, highly customizable system tray application that monitors and displays real-time network speeds for Windows.

    Cost / License

    Application type

    Platforms

    • Windows
    Tray widget
     
  12. BitMeter OS icon

    BitMeter OS

     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.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    Monitor pane
     
    |
    2
    BitMeter OS vs GlassWire Comments
    Aleksandr Dikov
    Negative
    0

    BitMeter OS is just a logger.

    Guest
    Positive
    0

    This program just monitors my computers network usage. It was perfect for me since I don't need all the features in Glasswire

    Review by a new / low-activity user.
    • BitMeter OS is Free and Open SourceGlassWire is Freemium and Proprietary
  13. Data Monitor icon

    Data Monitor

     10 likes

    “Data Monitor" is a user-friendly, free and open source app for you to manage your data usage. “Data Monitor" helps you to accurately measure your daily data traffic, and analyze the data in a way easy to understand.

    Cost / License

    Application type

    Platforms

    • Android
    • F-Droid
    Data Monitor screenshot 1
     
  14. Etherape icon

    Etherape

     5 likes

    EtherApe is a graphical network monitor for Unix modeled after etherman. Featuring link layer, IP and TCP modes, it displays network activity graphically. Hosts and links change in size with traffic. Color coded protocols display.

    3 Etherape alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    Etherape screenshot 1
     
12 of 19 GlassWire alternatives