Belle - Configurable React Components with great UX.
Blueprint - React-based UI toolkit for the web.
Ant Design - UI Design Language.
kit - Tools for developing, documenting, and testing React component libraries.
React Spring - Set of simple, spring-physics based primitives (as in building blocks) that should cover most of your UI related animation needs.
SVGR - Transform SVGs into React components.
Shopify - Shopify’s product component library.
react-jsonschema-form - React component for building Web forms from JSON Schema.
react-dropzone - Simple HTML5 drag-drop zone with React.js
React Kawaii - Cute React UI Components.
Primer Components - Primer React components.
react-movable - Drag and drop for your React lists and tables. Accessible. Tiny.
Semantic UI React - Official Semantic-UI-React integration.
React Sidebar - Sidebar component for React.
The Platform - Web API's turned into React Hooks and Suspense-friendly React components.
Reakit - Toolkit for building really interactive UIs with React.
libreact - Collection of useful React components.
React Circular Progressbar - Circular progress indicator.
React Window - React components for efficiently rendering large lists and tabular data.
React Flip Toolkit - Utility library for highly configurable layout transitions.
create-react-library - CLI for easily publishing modern React libraries with Rollup and example usage via create-react-app.