Portmaster AlternativesOnly apps categorised as Network Monitors

The best Network Monitor alternative to Portmaster is simplewall, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Portmaster and 14 are Network Monitors so hopefully you can find a suitable replacement. Other interesting Network Monitor alternatives to Portmaster are GlassWire, Fort Firewall, Little Snitch and LuLu by Objective-See.

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

  1. GlassWire icon
     151 likes

    Visualizes real-time and historical network activity, delivers alerts for suspicious behavior and unknown connections, manages firewall rules, reports DNS and system changes, identifies remote hosts, monitors app usage, supports remote monitoring, and detects possible threats.

    66 GlassWire alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application types

    Platforms

    • Windows
    • Android
    • Android Tablet
     
  2. Fort Firewall icon
     35 likes

    Simple firewall for MS Windows.

    37 Fort Firewall alternatives

    Cost / License

    Application types

    Platforms

    • Windows
     
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    1
    Comments about Fort Firewall as an Alternative to Portmaster
    RemovedUser
    Positive
    1

    It's more lightweight than Portmaster. It notifies me every time a new app is in use even background programs. Plus it shows the file path for each app which makes it easier to make sure it isn't malware posing as legitmate software.

    Review by a new / low-activity user.
    Fort Firewall icon
    Fort Firewall icon
    • Fort Firewall is Free and Open SourcePortmaster is Freemium and Open Source
  3. Little Snitch icon
     136 likes

    Firewall application for monitoring and controlling outbound network connections, notifying users of attempted access, supporting rule-based blocking, real-time alerts on suspicious activity, and preventing unauthorized data transmission on macOS systems.

    41 Little Snitch alternatives

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Mac
     
  4. OpenSnitch icon
     42 likes

    OpenSnitch is a GNU/Linux application firewall.

    37 OpenSnitch alternatives

    Cost / License

    Application types

    Platforms

    • Linux
     
    |
    1
    Comments about OpenSnitch as an Alternative to Portmaster
    Alx84
    Positive
    -1

    OpenSnitch is much more superior to any other software, especially astro-turfed Portmaster. Portmaster doesn't detect even a fraction of what is actually happening on your system, whereas OpenSnitch catches it all. It's an application firewall everyone should have! You'll be amazed how many stuff pretending-to-be-FOSS software is phoning home on you.

    OpenSnitch icon
    OpenSnitch icon
    • OpenSnitch is Free and Open SourcePortmaster is Freemium and Open Source
  5. NetLimiter icon
     92 likes

    Comprehensive Windows software for internet traffic control, enabling users to set bandwidth limits for applications or connections. Offers real-time monitoring, long-term stats per app, and detailed internet usage reports. Ideal for managing data efficiently and enhancing network performance.

    28 NetLimiter alternatives

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Windows
     
  6. Comodo Firewall is a personal firewall, a genre of security software that secures PCs by policing Internet traffic on an app by app basis. The most prominent feature of a personal firewall is generating popup notifications when an unknown program attempts to access the Internet...

    Cost / License

    • Free
    • Proprietary

    Application types

    Alerts

    • Bundleware

    Platforms

    • Windows
     
  7. 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
     
  8. Tiny Shield icon
     7 likes

    Tiny Shield keeps your network safe by watching all connections and stopping bad stuff before it can harm your computer. Tiny Shield keeps an eye on everything your Mac connects to, making sure you can see all your internet activity in one place.

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Mac
     
12 of 14 Portmaster alternatives