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

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

JavaScript API for Chrome and Firefox

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

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

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

Next generation testing framework powered by Vite.

Callback heaven for Node.js with async/await

The simplest yet most secure way to connect your blockchain-based applications to millions of MetaMask Wallet users.