TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

🐠 Babel is a compiler for writing next generation JavaScript.

⚡ Empowering JavaScript with native platform APIs. ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java, Dart). Use what you love ❤️ Angular, React, Solid, Svelte, Vue with: iOS (UIKi…

Run compilers interactively from your web browser and interact with the assembly

Develop. Preview. Ship.

A JavaScript library aimed at visualizing graphs of thousands of nodes and edges

Turbulenz is a modular 3D and 2D game framework for making HTML5 powered games for browsers, desktops and mobile devices.

HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.

Shumway is a Flash VM and runtime written in JavaScript

Implements Zones for JavaScript

Easily type math in your webapp

lichess.org mobile application

A port of Coq to Javascript -- Run Coq in your Browser

Parse SVG PathDatas

Infer a probabilistic schema for a MongoDB collection.

A parser for the Power Query / M formula language, written in TypeScript

Code du Travail Numérique

A JavaScript XSLT processor without native library dependencies

VSCode extension for highlighting XSLT and XPath (upto 3.0/3.1)

Wikidata Edit Framework for Javascript

Calcul de l'index d'égalité femme‑homme dans les entreprises

Library for building in-browser schema-aware XML editors