Alternatives

Products that do what Open Port Checkers does

All-in-one online network diagnostics toolkit

1. 1
   Port Checker▲87

   simple tool to check open ports on your computer

   2014

2. 2
   Port Checker App▲6

   Check open ports for free

   2025

3. 3OP
   Open Port Checker▲19

   2014 · portchecker.co

4. 4
   PortTraceX▲76

   Reveal why a port is in use

   Nov 2025 · porttracex.com

5. 5
   ISP.Tools▲15

   Instant global network diagnostics for ISPs and engineers.

   Nov 2025

6. 6IM
   I made tool that let's you see everything about any website▲411

   Yes, it's open source: https://github.com/lissy93/web-check :) Why I'm building this? There are a lot of tools out there for discovering meta and security data relating to a website, IP or server. But currently, there isn't anything that does everything, all in one place and without a paywall/ user sign up. It's still a WIP, and I'm working on a new version, with some more comprehensive checks, so any feedback would be much appreciated :)

   2024 · v1.web-check.xyz

7. 7
   Port Checker

   Check port status online

   Dec 2025 · port-checker.net

8. 8
   PingPing▲168

   A simple tool to monitor your website and SSL

   2018

9. 9PK
   Port Kill – A lightweight macOS status bar development port monitor▲128

   2025 · github.com

10. 10
    SSL Checker Tool▲84

    Free way to identify SSL configuration issues

    2019

11. 11PA
    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

12. 12
    FluxRadar▲7

    Ping, DNS, IP & network diagnostics in one place

    Jul 2026

13. 13
    WhatsMyIPLive▲5

    Free IP detection, geolocation, and network diagnostic tools

    Dec 2025 · whatsmyiplive.com

14. 14
    ApiChecker▲104

    Reliable uptime and performance monitoring for your services

    2019

15. 15
    DNSFly▲3

    Free DNS, SSL & Domain Toolkit

    Feb 2026 · dnsfly.net

16. 16DA
    Dug, A global DNS propagation checker on your CLI▲33

    2021 · github.com

17. 17
    XploreNetHub▲3

    Free DNS, SSL, WHOIS & network tools in your browser

    Jul 2026 · xplorenethub.com

18. 18PA
    Portview – a diagnostic-first port TUI (Rust, cross-platform)▲21

    Feb 2026 · github.com

19. 19
    DNS Scouter▲1

    Your All-in-One DNS & Domain Diagnostic Toolkit

    20d ago · dnsscouter.xyz

20. 20
    KIT.domains▲28

    Domain infrastructure monitoring across all registrars

    Mar 2026 · kit.domains

21. 21
    DNS Propagation Checker▲2

    Free online tool for real time DNS propagation checker

    Feb 2026 · showdns.net

22. 22
    Mr.DNS - DNS & Network Tools▲3

    Free diagnostic tools for DNS, email, and network security.

    Apr 2026

23. 23
    y4yes▲5

    Free, privacy-first network tools for developers.

    Dec 2025 · y4yes.com

24. 24
    Probe Toolkit

    Every network tool. One tab.

    Mar 2026 · probetoolkit.com

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