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Portmaster Alternatives

Portmaster is described as 'free and open-source application firewall that puts you back in charge over all your computer's network connections' and is a Firewall in the network & admin category. There are more than 10 alternatives to Portmaster for a variety of platforms, including Windows, Linux, Android, Android Tablet and Mac. The best alternative is AdGuard, which is both free and Open Source. Other great apps like Portmaster are simplewall, Pi-hole, LuLu by Objective-See and GlassWire.

Portmaster alternatives are mainly Firewalls but may also be Network Monitors or Ad Blockers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Portmaster.
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  • FreeOpen Source
  • Windows
  • Linux

Portmaster is a free and open-source application firewall that puts you back in charge over all your computer's network...

Learn more about Portmaster

  1. AdGuard icon


    • FreemiumOpen Source
    • Mac
    • Windows
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Vivaldi Browser
    • Google Chrome
    • Safari
    • Yandex.Browser
    • Opera
    • Firefox

    AdGuard is the best way to get rid of intrusive ads and online tracking, and to protect your computer from malware. Make your web surfing faster, safer and more comfortable with AdGuard!.

    Very good app for blocking ads. Use it!
  2. Simple tool to configure Windows Filtering Platform (WFP) which can configure network activity on your computer.

    Main Window

  3. Pi-hole icon


    • FreeOpen Source
    • Linux
    • Self-Hosted
    • CentOS
    • Fedora
    • Ubuntu
    • Debian
    • Raspbian
    • Raspberry Pi

    Block ads for all your devices without the need to install client-side software. The Pi-hole blocks ads at the DNS-level, so all your devices are protected.

    The Web interface shows how many ads were blocked, a query log, and more.
    Pi-hole vs Portmaster opinions
    pros, cons and recent comments

    Their is a comparison blog on suggesting when to use what solution

    Positive comment ago
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  4. LuLu is the free, shared-source firewall for macOS. Its goal is simple; block any unknown outgoing connections, until approved by the user.

    Menu bar
  5. GlassWire is a network security monitoring tool and analyzer that visualizes your network activity on an easy to use graph, alerts you of possible threats, manages your firewall, and more.

    GlassWire's graph shows you real-time network activity broken down by apps, traffic, and hosts.

  6. OpenSnitch icon


    • FreeOpen Source
    • Linux

    OpenSnitch is a GNU/Linux port of the Little Snitch application firewall.

  7. Little Snitch icon

    Little Snitch

    • Mac

    A firewall protects your computer against unwanted guests from the Internet. But who protects your private data from being sent out? Little Snitch does!

    Network monitor (official screenshot).
  8. NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows. You can use NetLimiter to set download/upload transfer rate limits for applications or even single connection and monitor their Internet traffic.

  9. Gufw icon


    • FreeOpen Source
    • Linux

    Gufw is an easy, intuitive way to manage your Linux firewall. It supports common tasks such as allowing or blocking pre-configured, common p2p, or individual ports port(s), and many others! Gufw is powered by Uncomplicated Firewall (ufw).

    Main Gufw window where you set which applications to allow or block.
  10. Fort Firewall icon

    Fort Firewall

    • FreeOpen Source
    • Windows

    Simple firewall for MS Windows.

    Main UI
Showing 10 of 17 alternatives