Atomize by Quarkly - Library for creating atomic react components
React Canvas - High performance <canvas> rendering for React components - Flipboard/react-canvas
React Rainbow Components - Build your web application in a snap.
React Router - React Router is a routing for React.js, that synchronizes the components of application with the URL & supports server side rendering.
Ant Design - An enterprise-class UI design language and React implementation with a set of high-quality React components, one of best React UI library for enterprises
Storybook - Storybook is an open source tool for developing UI components in isolation for React, Vue, and Angular. It makes building stunning UIs organized and efficient.