Dev tools · alternatives · 2026

Proxino is a monitoring and debugging tool designed for JavaScript developers. It helps developers track and troubleshoot their JavaScript code by providing visibility into application behavior and performance issues.… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Proxino -- Monitor and Debug your JavaScript launched in 2012; newer entries below may have overtaken it.

1. 1
   An open source performance monitoring tool▲135

   Hey HN. We’re Jay and Vadim from Highlight.io (https://highlight.io). We’re building an open source [1] monitoring platform for web applications. Today we’re excited to be sharing a performance tool we’ve been working on, which helps you inspect the latency of code execution from the client to the server. As engineers at past startups, we often had to debug slow queries, poor load times, inconsistent errors, etc... While tools like Jaegar [2] helped us inspect server-side performance, we had no way to tie user events to the traces we were inspecting. In other words, although we had…

   2024 · github.com · its alternatives →

2. 2
   Kuoll JavaScript Tracer▲205

   See how your users crashed your web application

   2016 · kuoll.com · its alternatives →

3. 3
   We’re open-sourcing our session replay tool▲408

   Hey HN! We’re open-sourcing highlight.io (https://github.com/highlight/highlight), a session replay and error monitoring tool. Highlight.io gives you a high-precision video-like replay of what users are doing when an error or exception occurs in your web app, along with a full-fledged error monitoring experience (similar to bugsnag, rollbar, etc..). The main value prop of highlight.io is that we help you understand the full context surrounding an error and allow you to drill down to the code path that a user invoked (i.e user clicked button X, sent network request Y, and…

   2023 · github.com · its alternatives →

4. 4
   Socket – Secure your JavaScript supply chain▲133

   Excited to share the project I've been working on for the past 7 months! We've seen nearly weekly attacks against the open source software supply chain. I saw the seeds of this trend start in the mid 2015s as an open source maintainer and I've watched it only get worse over the years. I finally decided to try to solve this problem. Socket is taking an entirely new approach to one of the hardest problems in security in a stagnant part of the industry that has historically been obsessed with just reporting on known vulnerabilities. Unlike other scanning tools, Socket actually analyzes the…

   2022 · socket.dev · its alternatives →

5. 5
   Wirebrowser – A JavaScript debugger with breakpoint-driven heap search▲73

   Hi HN! I'm building a JavaScript debugger called Wirebrowser. It combines network inspection, request rewriting, heap snapshots, and live object search. The main experimental feature is BDHS (Breakpoint-Driven Heap Search): it hooks into the JavaScript debugger and automatically captures a heap snapshot at every pause and performs a targeted search for the value or structure of interest. This reveals the moment a value appears in memory and the user-land function responsible for creating it. Another interesting feature is the Live Object Search: it inspects runtime objects (not just…

   Dec 2025 · github.com · its alternatives →

6. 6
   Bugbot by Kuoll▲204

   Instantly see user actions that lead up to a bug, in Slack

   2017 · kuoll.com · its alternatives →

7. 7
   A Chrome extension that tracks front-end JavaScript at runtime▲95

   A chrome extension tracks front-end JavaScript that uses DOM / jQuery APIs to manipulate html dom elements (e.g., change style, attach event listener) at runtime. - pilagod/js-tracker

   2018 · github.com · its alternatives →

8. 8
   Replay▲279

   Your time travel debugger

   2021 · replay.io · its alternatives →

9. 9
   Sentio Debugger▲80

   First single-stepping debugger with everything you wanted

   2023 · sentio.xyz · its alternatives →

10. 10
    Guardscript – Detect any changes made to your JavaScript files▲28

    Guardscript monitors every few minutes any changes made to your Javascript files and sends you a notification with the changes made. You can then detect any malicious modification by analyzing these results.

    2019 · guardscript.com · its alternatives →

11. 11
    FlowLens▲134

    Hi HN, We often run into this with coding agents like Claude Code: debugging turns into copy-pasting logs, writing long explanations, and sharing screenshots. FlowLens is an MCP server plus a Chrome extension that captures browser context (video, console, network, user actions, storage) and makes it available to MCP-compatible agents like Claude Code. You can try it here: https://magentic.ai/flowlens Any feedback—good, bad, or brutal—is welcome.

    Dec 2025 · magentic.ai · its alternatives →

12. 12DA
    Debuggify – Advanced error analytics for modern Javascript applications▲33

    2013 · debuggify.net · its alternatives →

13. 13LI
    Log.io (Realtime log monitoring, powered by node.js + socket.io)▲205

    Mengutamakan tampilan modern dan kemudahan navigasi, BUSUR4D menghadirkan pengalaman gaming yang terasa lebih sederhana namun tetap menarik. Beragam pilihan permainan dapat dijelajahi dalam satu platform dengan interface responsif dan desain visual yang nyaman, sehingga aktivitas gaming menjadi lebi

    2011 · logio.org · its alternatives →

14. 14
    DevLensPro▲98

    AI-powered debugging for Claude Code. Point, click, fix

    Jan 2026 · devlens.pro · its alternatives →

15. 15
    Kajero – Interactive JavaScript notebooks▲217

    2016 · joelotter.com · its alternatives →

16. 16CJ
    Chardin.js, beautiful instructions for apps▲203

    2013 · heelhook.github.com · its alternatives →

17. 17
    Ezno, a type checker for JavaScript and optimiser for React▲175

    Introducing Ezno and the current state of the project.

    2022 · kaleidawave.github.io · its alternatives →

18. 18AC
    A curated list of Chrome DevTools tips and tricks▲212

    Practical guides to browser DevTools and AI-assisted debugging — Chrome, Firefox, Safari and Edge. Panels, shortcuts, performance traces and accessibility.

    2014 · devtoolstips.com · its alternatives →

19. 19
    How to ensure JavaScript code quality▲83

    DeepScan is a cutting-edge static analysis tool for JavaScript. You can inspect all of your JavaScript code comprehensively.

    2017 · deepscan.io · its alternatives →

20. 20
    Highlight's Next.js Integration▲211

    A supercharged way to monitor your entire Next.js app

    2022 · launchdarkly.com · its alternatives →

21. 21
    An experimental data-flow analysis tool for JavaScript▲95

    Find the origin of any character in the DOM

    2019 · fromjs.com · its alternatives →

22. 22
    Monitor.io – remote monitoring and debugging for socket.io▲51

    2014 · drewblaisdell.github.io · its alternatives →

23. 23
    Socket▲211

    Secure your JavaScript supply chain

    2022 · socket.dev · its alternatives →

24. 24
    Checkly 2.0▲209

    Monitor your modern web app in 1 minute. Free dev plan!

    2021 · checklyhq.com · 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 →