freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

The library for web and native user interfaces.

The React Framework

Virtual whiteboard for sketching hand-drawn like diagrams

JavaScript 3D Library.

21 Lessons, Get Started Building with Generative AI

A set of beautifully-designed, accessible components and a code distribution platform. Works with your favorite frameworks. Open Source. Open Code.

Build smaller, faster, and more secure desktop and mobile applications with a web frontend.

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

An enterprise-class UI design language and React UI library

The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

A utility-first CSS framework for rapid UI development.

Node Version Manager - POSIX-compliant bash script to manage multiple active node.js versions

web development for the rest of us

Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Simple HTML5 Charts using the <canvas> tag

📜 33 JavaScript concepts every developer should know.

JavaScript animation engine

⚡ Delightful Node.js packages and resources

Curated list of design and UI resources from stock photos, web templates, CSS frameworks, UI libraries, tools and much more

PDF Reader in JavaScript

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

An open-source framework for making universal native apps with React. Expo runs on Android, iOS, and the web.

📋 React Hooks for form state management and validation (Web + React Native)

50+ mini web projects using HTML, CSS & JS

🌼 🌼 🌼 🌼 🌼  The most popular, free and open-source Tailwind CSS component library

Style guides for Google-originated open-source projects

Phaser is a fun, free and fast 2D game framework for making HTML5 games for desktop and mobile web browsers, supporting Canvas and WebGL rendering.

Beautiful and accessible drag and drop for lists with React