Portmaster AlternativesOnly apps categorised as Network Monitors

The best Network Monitor alternative to Portmaster is AdGuard, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Portmaster and many of them are Network Monitors so hopefully you can find a suitable replacement. Other interesting Network Monitor alternatives to Portmaster are Pi-hole, simplewall, GlassWire and Fort Firewall.

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Most Portmaster alternatives are Network Monitors, but you can also narrow the list to Firewalls or Privacy Tools. Another popular filter is Open Source.
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Alternatives
Portmaster alternatives page was last updated

Alternatives list

  1. AdGuard icon

    AdGuard

     306 likes

    Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spyware filter, and controls ad display in apps.

    138 AdGuard alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • HUAWEI AppGallery
    • iPad
    • Microsoft Edge
    • Vivaldi
    • Google Chrome
    • Samsung Galaxy Store
    • Safari
    • F-Droid
    • Android TV
    • Yandex Browser
    • Opera
    • Mozilla Firefox
    • CY flagCyprus
    • European Union flagEU
    AdGuard screenshot 1
    Good alternative?
     
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  2. Pi-hole icon

    Pi-hole

     203 likes

    Blocks ads for all connected devices at the DNS layer without client setup. Provides web control, in-app ad and tracker blocking, DHCP and API support, regex filtering, privacy modes, audit logs, and long-term query analytics for network management.

    48 Pi-hole alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • Self-Hosted
    • CentOS
    • Fedora
    • Ubuntu
    • Debian
    • Raspberry Pi OS
    • Raspberry Pi
    • US flagUnited States
    The Web interface shows how many ads were blocked, a query log, and more.
    Good alternative?
     
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  5. Ad
    Screenshot
    AdGuard icon
    AdGuard

    Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spywa...

    https://adguard.com
    Learn More
  6. GlassWire icon

    GlassWire

     158 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.

    76 GlassWire alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    • Android
    • Android Tablet
    • US flagUnited States
    GlassWire screenshot 1
    Good alternative?
     
  7. Fort Firewall icon

    Fort Firewall

     44 likes

    Standalone firewall for Windows 7 and later featuring flexible rules by application, address, or protocol, wildcards, parent process filtering, SvcHost controls, blocklists, bandwidth graphs, traffic stats tracking, speed limits, and real-time network monitoring.

    Cost / License

    Application type

    Platforms

    • Windows
    • UZ flagUzbekistan
    Main UI
    Good alternative?
     
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  9. Little Snitch icon

    Little Snitch

     139 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.

    51 Little Snitch alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Linux
    • AT flagAustria
    • European Union flagEU
    Little Snitch screenshot 1
    Good alternative?
     
  10. NetLimiter icon

    NetLimiter

     95 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.

    32 NetLimiter alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Windows
    • CZ flagCzechia
    • European Union flagEU
    NetLimiter screenshot 1
    Good alternative?
     
  11. OpenSnitch icon

    OpenSnitch

     47 likes

    GNU/Linux firewall enabling interactive outbound network filtering, outbound application control, blocking of ads and malware domains, centralized GUI node management, input policy configuration, SIEM integration, real-time alerts, and user-level rule customization.

    Cost / License

    Application type

    Platforms

    • Linux
    • IT flagItaly
    • European Union flagEU
    OpenSnitch screenshot 1
    Good alternative?
     
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  12. LuLu icon

    LuLu

     56 likes

    Free shared-source firewall for macOS blocking unknown outbound connections unless approved, alerts for unauthorized activity, helps detect malware, blocks OS or app data transmissions, no ads or tracking, audit-ready code on GitHub, enterprise event monitoring.

    20 LuLu alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • US flagUnited States
    LuLu screenshot 1
    Good alternative?
     
  13. Minimal Firewall icon

    Minimal Firewall

     15 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 type

    Platforms

    • Windows
    • US flagUnited States
    Minimal Firewall screenshot 1
    Good alternative?
     
  14. Comodo Free Firewall icon

    Comodo Free Firewall

     153 likes

    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...

    36 Comodo Free Firewall alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Alerts

    • Bundleware

    Platforms

    • Windows
    • US flagUnited States
    A security popup is one of the most commonly seen user interface components of this app and its main purpose.
    Good alternative?
     
  15. Tiny Shield icon

    Tiny Shield

     7 likes

    Monitors all network activity on Mac, blocks specific domains, websites, or entire apps, shows hostnames instead of IPs, supports DNS over HTTPS, provides traffic charts, uses fast system extension, developer-friendly, one-time purchase with no subscription required.

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • US flagUnited States
    Tiny Shield screenshot 1
    Good alternative?
     
12 of 20 Portmaster alternatives