Port Checker Alternatives

Port Checker is described as 'Simple tool for checking open ports on your computer/device. Test port forwarding setup on your machine. Diagnose connection issue with the ports' and is an website in the network & admin category. There are four alternatives to Port Checker, not only websites but also apps for Mac and Windows. The best Port Checker alternative is PortKiller, which is both free and Open Source. Other great sites and apps similar to Port Checker are Port Checker App, CurrPorts and PortsMonitor.

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Alternatives
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Alternatives list

  1. PortKiller icon
     15 likes

    Advanced multi-OS desktop tool for monitoring and managing local TCP ports, identifying bound processes, watching ports for notifications, handling Cloudflare Tunnels, filtering and pinning, managing Kubernetes port-forwards with logs, plus real-time process termination.

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Mac
    • Windows
    Good alternative?
     
  2. PortChecker.app is a free online utility that instantly checks open ports on your device and server. The tool supports remote port scanning, IP lookup, and network diagnostics, making it a reliable solution for developers, system administrators, and cybersecurity professionals.

    Cost / License

    • Free
    • Proprietary

    Platforms

    • Online
    Good alternative?
     
  3. CurrPorts icon
     27 likes

    Displays all open TCP/IP and UDP ports with full process details including name, path, version, creation time, and user information. Supports closing connections, killing processes, marking suspicious ports, exporting data in multiple formats, and portable operation for network monitoring.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Windows
    Good alternative?
     
  4. PortsMonitor icon
     2 likes

    PortsMonitor is a system utility for monitoring system TCP/IP network connections by application, and connections' status. With Search Expression support, you can filter connection with preferred conditions.

    Cost / License

    • Paid
    • Proprietary

    Platforms

    • Mac
    Good alternative?
     
4 of 4 Port Checker alternatives