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Alternatives

Products that do what TryJS does

Write & run JS/TS in your browser — instantly, for free

  1. 1
    RunJS18

    The JavaScript playground for your desktop

    2018

  2. 2WP

    2013 · usablica.github.com

  3. 3IM

    Hello HN! I'm the creator and solo developer of Extension.js, a development tool for browser extensions with built-in support for TypeScript, WebAssembly, React, and modern JavaScript. Developers use it to spend less time configuring the compilation config or learning new frameworks and more time actually writing code. Most projects similar to Extension.js rely on some sort of abstraction or configuration to get started, making the initial development process slow given the extra learning curve and setup guidelines. By using Extension.js, adding the package to your npm scripts is all it…

    2024 · github.com

  4. 4EJ

    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

  5. 5
    PlayJS138

    Playground JavaScript web, now with superpowers

    2023

  6. 6
    Bun303

    A fast JS runtime Node.js replacement with built‑in tools

    Dec 2025

  7. 7

    Run TypeScript snippets directly in Chrome DevTools

    2024

  8. 8
    JSLog91

    JavaScript & TypeScript playground

    2024

  9. 9
    Runno148

    Make embeddable code snippets that run in the browser

    2021

  10. 10

    Click on a component in browser to go to code in your editor

    2022

  11. 11

    Write, run, and test JavaScript snippets & JSON offline

    19d ago · chromewebstore.google.com

  12. 12
    NestJS149

    A progressive Node.js framework 🚀

    2018

  13. 13
    DisplayJS210

    A simple JavaScript framework for building ambitious UIs 😊

    2017

  14. 14IV

    Hi HN! Thanks for your attention to my post. It was a big challenge to run most of Node.js packages in browser, fast moreover. Virtual File system, resolve import/export. I got cold many times, depressions, burned out, yet still alive and finished it. Many guys helped me with an advice. Many users give a lot of positive feedback. There are 200,000 monthly unique users. I work full time now because of the freemium business model. To be honest - I am happy after many years of hard work.

    2022 · playcode.io

  15. 15

    Experiment with TypeScript - with npm in your browser

    2025

  16. 16TE

    A free, in-browser Jupyter-style notebook for TypeScript. It supports npm installs, network requests, and more—no signup or setup required. Why I Built It I wanted a simple way to test npm packages, experiment with TypeScript, and work on ideas like prompt engineering without heavy setup or local tools. Features - npm Integration: Install and use packages instantly. - Network Requests: Test APIs right in the notebook. - TypeScript Playground: Experiment, debug, and share code. It’s ideal for developers, educators, and anyone wanting a TypeScript scratch pad. Give it a try at…

    2025 · typescriptnotebook.com

  17. 17

    A chrome extension for running selected text in CodePen

    2020

  18. 18

    Create, run & share your custom tools effortlessly

    2023

  19. 19LT

    Author here. I really love the programming paradigm behind by Phoenix LiveView applications and wanted to expand the ecosystem to include programmers like myself that love Typescript. In summary, LiveViewJS reuses all the Phoenix client code and implemented a new backend in Typescript to handle client events and send back updates. Lots more detail and examples in the repo. Would love any questions and/or feedback. Thanks!

    2022 · github.com

  20. 20

    Format, validate & convert json to typescript instantly

    Nov 2025

  21. 21
    TypeORM81

    Node.js ORM written in TypeScript

    2017

  22. 22RU

    I needed a way to let users write JavaScript to create plugins for a site I'm building. I couldn't find a solution I was happy with, so ended up building one that run's it in a web worker on a separate domain from your main site. Hopefully I haven't missed anything. If so, please let me know! My website has an interactive demo you can write code in the browser textarea, and see the output on the right. Interactive Demo: https://workerbox.net/ Github: https://github.com/markwylde/workerbox

    2022 · workerbox.net

  23. 23YA

    About a year ago, I stumbled upon a new Nodejs language called "Imba", I found this language to be interesting and it seemed like it had a lot of potential. Doing a bit of digging, I realized no one had created a framework for it, so what did a normal dev do? Well, a normal dev went ahead and created another Nodejs Framework, only this time it was meant for Imba. So what did I create? I created a batteries included Framework heavily inspired by Laravel but it runs on Nodejs, and uses Imba as the default language, but you can actually use TypeScript or JavaScript. In fact, when creating a new…

    2022

  24. 24
    PlayJS1

    A desktop JavaScript playground with real npm packages & AI

    11d ago · playjs.app

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