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Dev tools · alternatives · 2026

24 alternatives to Kuoll JavaScript Tracer

See how your users crashed your web application

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Kuoll JavaScript Tracer launched in 2016; newer entries below may have overtaken it.

  1. 1

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

    2017 · kuoll.com · its alternatives →

  2. 2PM
  3. 3

    Connect to remote browser sessions and debug your JavaScript applications.

    2019 · remotejs.com · its alternatives →

  4. 4

    This TypeScript package allows you to safely execute JavaScript code within a WebAssembly sandbox using the QuickJS engine. Perfect for isolating and running untrusted code securely, it leverages the lightweight and fast QuickJS engine compiled to WebAssembly, providing a robust environment for code execution. Features - *Security*: Run untrusted JavaScript code in a safe, isolated environment. - *File System*: Can mount a virtual file system - *Custom Node Modules*: Custom node modules are mountable - *Fetch Client*: Can provide a fetch client to make http(s) calls - *Test-Runner*: Includes…

    2024 · github.com · its alternatives →

  5. 5

    Embeddable session replay infrastructure on rrweb, the open source standard. Unbranded SDK, ingest on your domain, replay through your API. Free tier included.

    2018 · rrweb.io · its alternatives →

  6. 6

    QuickBEAM is a JavaScript runtime embedded inside the Erlang/OTP VM. If you’re building a full-stack app, JavaScript tends to leak in anyway — frontend, SSR, or third-party code. QuickBEAM runs that JavaScript inside OTP supervision trees. Each runtime is a process with a `Beam` global that can: - call Elixir code - send/receive messages - spawn and monitor processes - inspect runtime/system state It also provides browser-style APIs backed by OTP/native primitives (fetch, WebSocket, Worker, BroadcastChannel, localStorage, native DOM, etc.). This makes it usable for: - SSR…

    Mar 2026 · github.com · its alternatives →

  7. 7

    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
    Sandworm▲304

    Keep your JavaScript code secure and compliant with Sandworm

    2023 · sandworm.dev · its alternatives →

  9. 9BA
  10. 10

    A complete and versatile web scraper. Contribute to ruipgil/scraperjs development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  11. 11
  12. 12

    RootCause helps you track and reproduce javascript errors. You can replay user sessions to avoid extensive troubleshooting and fix application issues in no time.

    2018 · therootcause.io · its alternatives →

  13. 13

    My favorite JS/TS job processing framework. Maybe yours too? [ARCHIVED] - eropple/taskbotjs

    2018 · github.com · its alternatives →

  14. 14WM
  15. 15

    no-setup remote debugging for your application

    2024 · tracethat.dev · its alternatives →

  16. 16

    Find the origin of any character in the DOM

    2019 · fromjs.com · its alternatives →

  17. 17

    Discover the bugs in your web applications and fix them fast

    2014 · trackjs.com · its alternatives →

  18. 18

    A self-hostable Wasm sandbox for JavaScript workers.

    Jun 2026 · kyushu.dev · its alternatives →

  19. 19
  20. 20

    Decorates stack traces with source code snippets. Contribute to laech/java-stacksrc development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  21. 21AL
  22. 22

    Render multiple moving rectangles to compare a number of canvas engines.

    2020 · benchmarks.slaylines.io · its alternatives →

  23. 23

    :umbrella: Lightweight javascript library for DOM manipulation and events

    2018 · umbrellajs.com · its alternatives →

  24. 24

    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 →

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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 →