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.

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

Deliver web apps with confidence 🚀

An enterprise-class UI design language and React UI library

JavaScript API for Chrome and Firefox

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

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

Realtime application framework (Node.JS server)

Fast, easy and reliable testing for anything that runs in a browser.

ORM for TypeScript and JavaScript. Supports MySQL, PostgreSQL, MariaDB, SQLite, MS SQL Server, Oracle, SAP Hana, WebSQL databases. Works in NodeJS, Browser, Ionic, Cordova and Electron platforms.

Build forms in React, without the tears 😭

A one-of-a-kind resume builder that keeps your privacy in mind. Completely secure, customizable, portable, open-source and free forever. Try it out today!

The next open source file uploader for web browsers 🐶

The fast, flexible, and elegant library for parsing and manipulating HTML and XML.

A frontend Framework for single-page applications on top of REST/GraphQL APIs, using TypeScript, React and Material Design

⚙️ Browser devtools extension for debugging Vue.js applications.

⚡ 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…

The most advanced browser fingerprinting library.

✍ It has never been so easy to document your things!

Make images smaller using best-in-class codecs, right in the browser.

A beautiful replacement for JavaScript's "alert"

A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/

SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open sour…

Collection of comprehensive TypeScript libraries for Interaction with the Ethereum JSON RPC API and utility functions.

A WebGL accelerated JavaScript library for training and deploying ML models.

🚀 ice.js: The Progressive App Framework Based On React（基于 React 的渐进式应用框架）

Optimize React performance and make your React 70% faster in minutes, not months.

A lightweight Node.js private proxy registry

LangChain & LangGraph AI PDF chatbot agent