Dev tools · alternatives · 2026
24 alternatives to RunJS
Write and run JavaScript instantly 🚀
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. RunJS launched in 2019; newer entries below may have overtaken it.
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Interactive javascript development environment
2025 · surajadsul.github.io · its alternatives →
- 4
Bun▲303A fast JS runtime Node.js replacement with built‑in tools
Dec 2025 · bun.com · its alternatives →
- 5RC
2018 · roughjs.com · its alternatives →
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Write, run, and test JavaScript snippets & JSON offline
24d ago · chromewebstore.google.com · its alternatives →
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DisplayJS▲210A simple JavaScript framework for building ambitious UIs 😊
2017 · its alternatives →
- 8RE
2019 · github.com · its alternatives →
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autoComplete.jsâ–²315Simple autocomplete pure vanilla Javascript library.
2018 · its alternatives →
- 10SU
2022 · npmjs.com · its alternatives →
- 11EJ
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 →
- 12PP
2018 · paperprograms.org · its alternatives →
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TryJS▲3Write & run JS/TS in your browser — instantly, for free
Feb 2026 · tryjs.app · its alternatives →
- 14JL
http://instantclick.io/ It seems the internet architecture won't bring us instant websites anytime soon. So here is a hack. I released this JS library last month (today is version 2.0 release, fixing v1.0's rough edges), it makes use of HTML5's pushState and preloading to make a website instant. It works like this: before clicking on a link, you'll hover over it. And there's a delay of 200-300 ms between these two events. InstantClick uses this delay to preload a page, when you click on a link it will display instantly in most case. (You can test on the website.) That's…
2014 · its alternatives →
- 15MA
2024 · benchjs.com · its alternatives →
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- 17RU
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 · its alternatives →
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Run JavaScript instantly in your browser - no setup needed
Feb 2026 · online-js-compiler.vercel.app · its alternatives →
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Instant visualization of your code
2022 · its alternatives →
- 23AL
2017 · maierfelix.github.io · 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 →