@mui/material

Material UI (MUI) is the most popular React UI component library, implementing Google's Material Design specification with a comprehensive collection of pre-built, accessible components. MUI provides over 50 components including buttons, text fields, selects, dialogs, menus, tables, pagination, stepper, snackbar, chips, and data display components, all following Material Design guidelines for elevation, motion, color, and typography. The library's theming system allows deep customization of colors, typography, spacing, breakpoints, and component-level style overrides through createTheme, enabling brands to adapt Material Design to their identity. MUI v5 uses Emotion as its default styling engine (with support for styled-components) and provides the sx prop for inline responsive styling with theme-aware values. MUI X extends the core with advanced data-heavy components including DataGrid, DatePicker, TreeView, and Charts for enterprise applications. The library provides comprehensive TypeScript types, server-side rendering support, and RTL (right-to-left) language support. MUI's component API follows a consistent pattern with variant, color, size, and disabled props across components. While opinions on Material Design aesthetics vary, MUI's comprehensive component coverage and enterprise-grade quality make it the go-to choice for teams needing a complete, production-ready component system.