Material UI: Comprehensive React component library that implements Google's Material Design. Free forever.

JavaScript API for Chrome and Firefox

Generation of diagrams like flowcharts or sequence diagrams from text in a similar manner as markdown

Realtime application framework (Node.JS server)

A powerful cross-platform UI toolkit for building native-quality iOS, Android, and Progressive Web Apps with HTML, CSS, and JavaScript.

The HTML5 Creation Engine: Create beautiful digital content with the fastest, most flexible 2D WebGL renderer.

Immutable persistent data collections for Javascript which increase efficiency and simplicity.

Screenshots with JavaScript

The next open source file uploader for web browsers 🐶

Transforming styles with JS plugins

The open source frontend for GitBook doc sites

⚡ 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…

Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.

📘 OpenAPI/Swagger-generated API Reference Documentation

Babylon.js is a powerful, beautiful, simple, and open game and rendering engine packed into a friendly JavaScript framework.

Lightweight, user-friendly onboarding tour library

HLS.js is a JavaScript library that plays HLS in browsers with support for MSE.

The API and real-time application framework

ActivityPub-federated video streaming platform using P2P directly in your web browser

Simple responsive charts

The Aurelia 1 framework entry point, bringing together all the required sub-modules of Aurelia.

HTML5 canvas based smooth signature drawing

A beautiful yet powerful syntax highlighter

🧙 Valtio makes proxy-state simple for React and Vanilla

Social networking technology created by Bluesky

⚔ Multiplayer Framework for Node.js

🎨 Beautiful images of your code — from right inside your terminal.

Visual Studio Code extension for Prettier

Server for PeerJS

A cloud service that enables Cordova and React Native developers to deploy mobile app updates directly to their users’ devices.