Dev tools · alternatives · 2026

24 alternatives to QuickBEAM – run JavaScript as supervised Erlang/OTP processes

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…

QuickBEAM is a JavaScript runtime that runs inside the Erlang/OTP virtual machine, allowing JavaScript code to execute as supervised OTP processes. It is designed for full-stack developers who need to run… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Execute JavaScript in a WebAssembly QuickJS sandbox▲206

   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 →

2. 2
   My x86 emulator written in JavaScript▲765

   Run KolibriOS, Linux or Windows 98 in your browser

   2013 · copy.sh · its alternatives →

3. 3
   Jaws – a JavaScript to WASM ahead-of-time compiler▲290

   I've open sourced a JavaScript to WASM compiler. It's an experimental tool, but given the semantics I already implemented, I'm fairly certain I am able to eventually cover 100% of JavaScript spec. Any ideas, questions or critique welcomed! If you are interested in WASM, especially with new proposals like WASM GC or exception handling, it might be a good source of seeing these features in action - the project has a few thousand lines of hand written WAT so far.

   2024 · github.com · its alternatives →

4. 4
   Apidog Fast Request▲512

   Develop APIs fast + automatically detect endpoints

   2025 · fastrequest.apidog.com · its alternatives →

5. 5
   Codec-beam – Generate Erlang VM byte code from Haskell▲53

   Generate Erlang VM byte code from Haskell. Contribute to kofigumbs/codec-beam development by creating an account on GitHub.

   2018 · github.com · its alternatives →

6. 6
   Compile Erlang to WASM and run as HTTP/incoming-handler▲32

   Hello! This is the most useless thing I did in quite some time, but it was fun. Compile erlang (actually BEAM) to wasm, statically link with a small http wrapper and run as a request handler under wasmtime. This is not very practical as of now and you better just compile atomvm and statically link it with erlang payload if you really need to run erlang on the edge node (you don't). When (if) typed continuations become a thing, this should also allow for erlang actor model.

   2024 · github.com · its alternatives →

7. 7
   TaskBotJS – TypeScript and JavaScript background job processing▲137

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

   2018 · github.com · its alternatives →

8. 8AI
   An Isomorphic JavaScript Framework Faster Than React▲337

   2015 · jsblocks.com · its alternatives →

9. 9
   Kyushu – A self-hostable WASM sandbox for JavaScript workers▲89

   A self-hostable Wasm sandbox for JavaScript workers.

   Jun 2026 · kyushu.dev · its alternatives →

10. 10
    WebRTC Nuts and Bolts, A holistic way of understanding how WebRTC runs▲124

    Hi HN! I’m so excited to show my first open-source project and first post here. I initially started this project to learn Go language, it is an experimental project. The main goal is to track the adventure of a WebRTC stream from start to finish, by debugging the project or tracking the output at console. By trying out this project, you will deep dive into the steps which are taken while starting up a WebRTC session, and more. It consists of a web UI (TypeScript) and a server back-end (Golang) projects. They can run on Docker containers, in development mode or production mode, you can find…

    2022 · github.com · its alternatives →

11. 11AL
    A library to record and intercept JavaScript at runtime▲118

    2017 · maierfelix.github.io · its alternatives →

12. 12
    Firefox in WebAssembly▲273

    This is the entire Firefox browser rendering to a element. Gecko, all UI components, and the Spidermonkey JS engine are all compiled and running in WebAssembly. Here are a few things you might find interesting: - This is fully end to end encrypted! We use the WISP protocol for TCP-over-websockets. - There is a novel WASM->JS JIT for experimental site speedup - This port cost over 25k in opus/fable tokens for debugging and JIT research This was just a fun experiment to push the boundaries of WebAssembly. For a more usable "browser in browser" experience, we also built…

    Jul 2026 · developer.puter.com · its alternatives →

13. 13
    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 →

14. 14
    es6_maps, new Elixir syntax feature via runtime compiler hacking▲71

    Hi HN! I thought you might enjoy this even if you don't know much about Elixir. `es6_maps` is a small library that introduces a "shorthand" map creation syntax, similar to shorthand object construction in JavaScript/TypeScript. For those unfamiliar with Elixir, the most interesting aspect might be how it achieves this. `es6_maps` takes advantage of BEAM (Erlang's VM) hot-reload capabilities to amend the Elixir compiler bytecode at runtime, adding functions that expand the shorthand syntax for further compilation. I think it's a nice showcase of the power you can wield (with care) when…

    2024 · github.com · its alternatives →

15. 15
    Instant API – Build type-safe web APIs with JavaScript▲102

    Hey there HN! I just wrapped up an all-day documentation spree for Instant API, a JavaScript framework for easily building web APIs that implements type safety at the HTTP interface. It uses a function-as-a-service approach combined with a slightly modified JSDoc spec to automatically enforce parameter and schema validation before HTTP requests make it through to your code. You just write comments above your endpoint functions and voila, enforced type safety contracts between your API endpoints and your developers. OpenAPI specifications are generated automatically as a byproduct of simply…

    2023 · github.com · its alternatives →

16. 16
    Kuoll JavaScript Tracer▲205

    See how your users crashed your web application

    2016 · kuoll.com · its alternatives →

17. 17
    Elsa – A QuickJS wrapper written in Go▲126

    ❄️ Elsa is a minimal runtime for JavaScript and TypeScript written in Go - elsaland/elsa

    2020 · github.com · its alternatives →

18. 18
    Runno▲148

    Make embeddable code snippets that run in the browser

    2021 · runno.dev · its alternatives →

19. 19OS
    Open Source emulator in Javascript that runs Linux▲65

    2012 · ubercomp.com · its alternatives →

20. 20SU
    Speed up your site by running JavaScript when the browser is idle▲94

    2022 · npmjs.com · its alternatives →

21. 21
    Jax-JS, array library in JavaScript targeting WebGPU▲84

    JAX in pure JavaScript, as a flexible machine learning library and compiler.

    Jan 2026 · ss.ekzhang.com · its alternatives →

22. 22
    Run Python, Ruby, Node.js, C++, Lua in the Browser via x86 to WASM JIT▲171

    Linux virtual machine, running in the browser via HTML5/WebAssembly. Networking and graphics supported.

    2021 · repl.leaningtech.com · its alternatives →

23. 23
    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 →

24. 24TF
    Transcrypt – Fast, small Python 3.5 to JavaScript transpiler▲121

    The Transcrypt Python to JavaScript compiler makes it possible to program lean and fast browser applications in Python. Transcrypt applications can use any JavaScript library and can also run on top of Node.js or be used in combination with Django.

    2016 · transcrypt.org · 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 →