Alternatives

Products that do what Port Checker App does

Check open ports for free

1. 1
   Port Checker▲87

   simple tool to check open ports on your computer

   2014

2. 2OP
   Open Port Checker▲19

   2014 · portchecker.co

3. 3
   Port Checker

   Check port status online

   Dec 2025 · port-checker.net

4. 4
   PortTraceX▲76

   Reveal why a port is in use

   Nov 2025 · porttracex.com

5. 5
   Open Port Checkers

   All-in-one online network diagnostics toolkit

   Mar 2026 · openportcheckers.com

6. 6PK
   Port Kill – A lightweight macOS status bar development port monitor▲128

   2025 · github.com

7. 7
   Portero▲166

   Know exactly what's running on every port of your Mac

   Jul 2026 · porteroapp.pages.dev

8. 8IB
   I built ContainerCVE – a web tool to scan public Docker images▲91

   I found it odd there wasn’t a simple web tool to scan Docker Hub images for vulnerabilities. So I built one. It’s powered by the popular open-source tool Trivy.

   2023 · containercve.com

9. 9PA
   Portview – a diagnostic-first port TUI (Rust, cross-platform)▲21

   Feb 2026 · github.com

10. 10
    Port Detective Pro▲4

    Find, kill, and guard the processes on your ports

    Jun 2026 · automatalabs.ca

11. 11
    ISP.Tools▲15

    Instant global network diagnostics for ISPs and engineers.

    Nov 2025

12. 12KC
    Killport – CLI tool to kill processes running on a specified port▲153

    2023 · github.com

13. 13RL
    Rust Library to check your Internet connectivity▲41

    2019 · github.com

14. 14
    Bulk Persistent Connection Checker▲72

    Check if your server supports Persistent Connection

    2017

15. 15
    Ping - CbrTool▲3

    Free Online Ping Tool for Network Diagnostics

    Jul 2026 · cbrtool.com

16. 16
    Port Radar for macOS▲85

    An AI port manager for your Mac.

    16d ago · portradar.devmesh.xyz

17. 17PA
    PingStalker – A macOS tool for network engineers▲77

    Hi HN - I’m the developer of PingStalker, a macOS utility I built to see what’s really happening on the LAN/WLAN. I live in the CLI, but when it came to discovery and monitoring, I found it limiting. So I built a GUI that brings my favorite tools together in one place. PingStalker started because I wanted to know if something on the network was scanning my machine. I also wanted quick access to core details—external IP, Wi-Fi data, and local topology. Then I wanted more: fast, reliable scans using ARP tables and ICMP. As a Wi-Fi engineer, I couldn’t stop there. I kept adding ways to…

    Nov 2025 · pingstalker.com

18. 18
    PortTraceX▲11

    Reveal why a port is in use

    Nov 2025 · porttracex.com

19. 19
    PortPeek▲2

    see what's on your localhost ports

    Jul 2026 · portpeek.hishammedhat.com

20. 20
    y4yes▲5

    Free, privacy-first network tools for developers.

    Dec 2025 · y4yes.com

21. 21
    Manfath▲3

    See every port. Kill what you don't need. Share the rest.

    Apr 2026 · manfath.dev

22. 22PA
    Portview, A diagnostic-first port viewer for Linux (~930 KB, zero deps)▲5

    Feb 2026 · github.com

23. 23
    Portless - End port conflicts forever▲14

    Developer's best friend. Kill stubborn ports in one click.

    Nov 2025 · portless.app

24. 24TF
    Tool for testing sites and apps on slow connections▲35

    2019 · httpdebugger.com

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