Ant Design - An enterprise-class UI design language and React-based implementation.
Blueprint - A React-based UI toolkit for the web. It is optimized for building complex, data-dense web interfaces for desktop applications.
dva - React and Redux based, lightweight and Elm-style framework.
Electrode - A platform for building universal React/Node.js applications with standardized structure, best practices, and modern technologies baked in.
Elemental UI - A UI Toolkit for React.js Websites and Apps.
Essence - The Essential Material Design Framework.
Grommet - The most advanced UX framework for enterprise applications.
libreact - a collection of most essential React utilities you will probably need in any project.
Material-UI - A Set of React Components that Implement Google's Material Design.
react-md - A set of React components and sass files for implementing Google's Material Design.
React-MDL - A set of React components build on top of Material Design Lite.
React Toolbox - A set of React components that implement Google's Material Design specification.
ReactXP - A library for cross-platform app development using React and React Native.