Software Alternatives, Accelerators & Startups


Is a Privacy Modular Privacy App which includes a "DNS over TLS" feature as well as an "Application Firewall".

Portmaster Alternatives

The best Portmaster alternatives based on verified products, community votes, reviews and other factors.
Filter: 12 Open-Source Alternatives Latest update:

  1. 21

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

  2. 16

    Lightweight and non-intrusive firewall

  3. Elegant user management, tailor-made for B2B SaaS

    Try for free freemium

    Try for free
  4. 15

    Visualize network activity in detail, get notified when new apps access the network, look out for...

  5. 19

    NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.

  6. 19

    Little Snitch is a firewall application that monitors and controls outbound internet traffic.

  7. 14

    Pi-hole is a multi-platform, network-wide ad blocker.

    Open Source

  8. 11

    Block ads, trackers and malicious websites on all your devices.

    Open Source

  9. Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.

  10. 11

    Surf the Web Ad-Free and Safely. Shield up!

  11. LuLu is the free open-source macOS firewall that aims to block unauthorized (outgoing) network...

  12. 13

    Gufw is an easy, intuitive way to manage your Linux firewall.

  13. Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses /...

  14. NetBalancer is a Windows application for local network traffic control and monitoring.

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