MUI

MUI (formerly Material-UI) is a comprehensive React component library that implements Google's Material Design system, providing production-ready components for building modern web applications. The library includes over 50 foundational components covering layout, navigation, inputs, data display, and feedback elements that follow Material Design guidelines. MUI components are highly customizable through a powerful theming system that allows modification of colors, typography, spacing, breakpoints, and component styles while maintaining design consistency. The library supports both Material Design and custom design systems through its styling solution that works with emotion or styled-components. MUI includes advanced components like data grids, date/time pickers, autocomplete inputs, and tree views for building complex user interfaces. It provides comprehensive TypeScript support with type definitions for all components and their props. MUI emphasizes accessibility with ARIA attributes, keyboard navigation, and screen reader support built into all components. The library offers multiple installation options including pre-packaged themes, icon sets, and utility-first approaches with MUI System. MUI is one of the most popular React component libraries, used by companies like Spotify, Amazon, and NASA for building scalable web applications, dashboards, and design systems.