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

A DLNA, UPnP and HTTP(S) Media Server.

Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..

Platform to build admin panels, internal tools, and dashboards. Integrates with 15+ databases and any API.

The library for web and native user interfaces.

Apple Music...ish

The JavaScript and API powered WordPress.com

Storybook is a frontend workshop for building UI components and pages in isolation. Made for UI development, testing, and documentation.

⚡ Empowering JavaScript with native platform APIs. ✨ Best of all worlds (TypeScript, Swift, Objective C, Kotlin, Java). Use what you love ❤️ Angular, Capacitor, Ionic, React, Solid, Svelte, Vue with: SwiftUI, Jetpack Compose, Flutter and you name it compatible.

Easy to maintain open source documentation websites.

A terminal built on web technologies

The best React-based framework with performance, scalability and security built in.

A frontend Framework for building B2B applications running in the browser on top of REST/GraphQL APIs, using ES6, React and Material Design

A declarative JavaScript library for application development using cloud services.

A framework for building native Windows apps with React.