react-component/tooltip

Ant Design is an open-source React UI library and design language maintained at ant-design/ant-design on GitHub. Its README describes pre-built TypeScript components, a CSS-in-JS theme-customization system, and locale support spanning dozens of languages, aimed at enterprise-class web apps. The project is released under the MIT license.

freeCodeCamp is a free, self-paced curriculum for learning to code, published as open source at freeCodeCamp/freeCodeCamp. It's a 501(c)(3) nonprofit funded by donor support, structured around six certifications in its Full-Stack Developer Curriculum, each gated by required projects instead of open-book quizzes. The repository also carries beta language certifications for developers, interview-prep resources, and the code that runs the live freecodecamp.org platform.

Storybook is a frontend workshop maintained at storybookjs/storybook. It renders UI components and pages in isolation from your main application. Core renderers include React, Angular, Vue 3, Web Components, HTML, Ember, Svelte, and Preact, plus React Native and community support for Qwik and SolidJS. It's released under the MIT license.

Awesome React (enaqx/awesome-react) is a curated-list GitHub repository that catalogs frameworks, component libraries, state management tools, styling options, testing tools, and React Native packages for the React ecosystem. It also includes a Real Apps section pointing to production software built with React, plus a Contribution section explaining the project's history and rules.