Alternatives to FortKnox Firewall for all platforms with Free License

  • Gufw

    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...

    Free Open Source Linux

    Gufw icon
  • Privatefirewall

    This personal firewall and intrusion detection application provides comprehensive online security. It constantly monitors your PC for intrusion and reports any findings...

    • Discontinued
      Software unavailable at official site but still available through download sites.

    Free Windows

    Privatefirewall icon
  • Windows Firewall Notifier

    Windows Firewall Notifier (WFN) extends the default Windows embedded firewall behavior, allowing to visualize and handle incoming or outgoing connections. Features: ...

    Free Open Source Windows

    Windows Firewall Notifier icon
  • Firestarter

    Firestarter is an Open Source visual firewall program. The software aims to combine ease of use with powerful features, therefore serving both Linux desktop users and...

    • Discontinued
      Active development stopped in 2005.

    Free Open Source Linux

    No features added Add a feature

    Firestarter icon
  • PC Tools Firewall Plus

    PC Tools Firewall Plus is a powerful free personal firewall for Windows® that protects your computer by preventing unauthorized users from gaining access to your...

    • Discontinued
      Last version, 6.0.0.74, was released on September 29, 2009. It can be still downloaded from Download.com.

    Free Windows

    No features added Add a feature

    PC Tools Firewall Plus icon
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  • Filseclab Personal Firewall

    Filseclab Personal Firewall Professional Edition is one of the most important software of Filseclab, it is very easy to use and also very powerful. It can provide more...

    • Discontinued
      The last update was released on July 29th, 2005.

    Free Windows

    No features added Add a feature

    Filseclab Personal Firewall icon
  • Wallix Pro Firewall

    Wallix Pro Firewall prevents intruders from accessing your computer and that’s the main objective for a computer firewall. It automatically detects and blocks attacks...

    • Discontinued
      Website now longer exists to provide download. Program is still available on other sites.

    Free Windows

    No features added Add a feature

    Wallix Pro Firewall icon

Platforms

Desktop

Show 2 less popular platforms