Dev tools · alternatives · 2026

24 alternatives to Serial Port Monitor

Monitor RS232/422/485 COM ports in your network

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Serial Port Monitor launched in 2019; newer entries below may have overtaken it.

1. 1NM
   Network Monitor – a GUI to spot anomalous connections on your Linux▲156

   A real-time network connection monitoring tool built with Rust and GTK4, displaying active connections with live I/O statistics in a modern graphical interface. https://github.com/grigio/network-monitor

   Nov 2025 · its alternatives →

2. 2
   Port Checker▲87

   simple tool to check open ports on your computer

   2014 · portchecker.co · its alternatives →

3. 3
   PortTraceX▲76

   Reveal why a port is in use

   Nov 2025 · porttracex.com · its alternatives →

4. 4
   Portview – a diagnostic-first port TUI (Rust, cross-platform)▲21

   I built a small CLI tool that answers "what's using my port?" without the lsof/ss/netstat incantation dance.

   Feb 2026 · github.com · its alternatives →

5. 5
   Port Kill – A lightweight macOS status bar development port monitor▲128

   Port Kill helps you find and free ports and caches blocking your dev work. - treadiehq/port-kill

   2025 · github.com · its alternatives →

6. 6
   Dish: A lightweight HTTP and TCP socket monitoring tool written in Go▲39

   dish is a lightweight, 0 dependency monitoring tool in the form of a small binary executable. Upon execution, it checks the provided sockets (which can be provided in a JSON file or served by a remote JSON API endpoint). The results of the check are then reported to the configured channels. It started as a learning project and ended up proving quite handy. Me and my friend have been using it to monitor our services for the last 3 years. We have refactored the codebase to be a bit more presentable recently and thought we'd share on here! The currently supported channels include: - Telegram -…

   2025 · github.com · its alternatives →

7. 7
   Linux server monitoring web dashboard▲175

   A beautiful web dashboard for Linux. Contribute to tariqbuilds/linux-dash development by creating an account on GitHub.

   2014 · github.com · its alternatives →

8. 8
   Ping▲151

   Monitor Linux servers on your phone

   2017 · apps.apple.com · its alternatives →

9. 9
   Monitor.io – remote monitoring and debugging for socket.io▲51

   2014 · drewblaisdell.github.io · its alternatives →

10. 10
    Subtrace – Wireshark for Docker Containers▲369

    Hey HN, we built Subtrace (https://subtrace.dev) to let you see all incoming and outgoing requests in your backend server—like Wireshark, but for Docker containers. It comes with a Chrome DevTools-like interface. Check out this video: https://www.youtube.com/watch?v=OsGa6ZwVxdA, and see our docs for examples: https://docs.subtrace.dev. Subtrace lets you see every request with full payload, headers, status code, and latency details. Tools like Sentry and OpenTelemetry often leave out these crucial details, making prod debugging slow and annoying. Most of the…

    2025 · github.com · its alternatives →

11. 11
    Serial Port Mate▲7

    A cross-platform serial port debugging tool and easy to use.

    2024 · its alternatives →

12. 12
    Open Port Checker▲19

    Port Checker is a simple tool to check for open ports and test port forwarding setup on your router. Verify and diagnose connection errors on your computer.

    2014 · portchecker.co · its alternatives →

13. 13
    Lightweight system monitor for Linux VPS written in Go▲63

    Lightweight system monitor for Linux VPS. Contribute to leodeim/vpsmon development by creating an account on GitHub.

    Aug 2026 · github.com · its alternatives →

14. 14
    PortManager – Manage ports from your macOS menu bar▲60

    Find, open and kill ports in a couple of clicks. Works with Node, Python, Ruby, PHP, HTTP and pretty much any process listening on a TCP port.

    2019 · portmanager.app · its alternatives →

15. 15
    PingPing▲168

    A simple tool to monitor your website and SSL

    2018 · pingping.io · its alternatives →

16. 16
    Simple monitoring service▲95

    Tools for people who ship. T3 Code, T3 Chat, and more.

    2014 · ping.gg · its alternatives →

17. 17
    NetBeez▲92

    Network monitoring from the user perspective

    2016 · netbeez.net · its alternatives →

18. 18MI
    Monitor in a Box – Instantly usable, open source monitoring▲74

    2016 · solutions.stacktile.io · its alternatives →

19. 19
    AES67 Stream Monitor – An app to monitor audio over IP streams▲84

    Cross-Plattform AES67 Stream Monitor for Audio over IP networks. The AES67 Stream Monitor enables you to listen to any channel of audio in an AES67 Stream.

    2021 · aes67.app · its alternatives →

20. 20
    CLI forensics tool for tracking USB device artifacts on Linux▲136

    Tracking history of USB events on GNU/Linux. Contribute to snovvcrash/usbrip development by creating an account on GitHub.

    2019 · github.com · its alternatives →

21. 21
    Port Checker Online▲1

    Port checker online

    2022 · portcheckers.com · its alternatives →

22. 22HL
    Hnwatch – Linux x64 terminal-based real-time HN watcher/reader▲102

    2015 · 2ton.com.au · its alternatives →

23. 23
    Port Radar for macOS▲85

    An AI port manager for your Mac.

    Aug 2026 · portradar.devmesh.xyz · its alternatives →

24. 24
    Port Detective Pro▲4

    Find, kill, and guard the processes on your ports

    Jun 2026 · automatalabs.ca · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →