freeCodeCamp.org's open-source codebase and curriculum. Learn to code for free.

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

💯 Curated coding interview preparation materials for busy software engineers

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

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

JavaScript API for Chrome and Firefox

Storybook is the industry standard workshop for building, documenting, and testing UI components in isolation

"The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, and many more

A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀

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

The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many mo…

Realtime application framework (Node.JS server)

A JS library for predictable global state management

Declarative routing for React

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

The repository for high quality TypeScript type definitions.

🐻 Bear necessities for state management in React

Delightful JavaScript Testing.

A terminal built on web technologies

🐠 Babel is a compiler for writing next generation JavaScript.

🤖 Powerful asynchronous state management, server-state utilities and data fetching for the web. TS/JS, React Query, Solid Query, Svelte Query and Vue Query.

React Hooks — 👍

Next-generation ORM for Node.js & TypeScript | PostgreSQL, MySQL, MariaDB, SQL Server, SQLite, MongoDB and CockroachDB

🐉 Lerna is a fast, modern build system for managing and publishing multiple JavaScript/TypeScript packages from the same repository.

Build forms in React, without the tears 😭

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

A reactive programming library for JavaScript

React Hooks for Data Fetching

A completely customizable framework for building rich text editors. (Currently in beta.)

Fast, disk space efficient package manager