Pigment CSS is a zero-runtime CSS-in-JS library that extracts the colocated styles to their own CSS files at build time.

Base UI is an open-source library of accessible, unstyled UI components for React.

Material Design Web Components

The library for web and native user interfaces.

A tool for analyzing the output of `tsc --generateTrace`

Toolpad Studio: Low-code admin builder. Open-source and powered by MUI.

Lexical is an extensible text editor framework that provides excellent reliability, accessibility and performance.

Utilities to match the speech output of screen readers when replaying user interactions.

The public mono-repository of MUI (as an organization), see mui/mui-private for the opposite.

Demo app of React Server Components.

Workgroup for React 18 release.

MUI X: Build complex and data-rich applications using a growing list of advanced React components, like the Data Grid, Date and Time Pickers, Charts, and more!

Fluent UI web represents a collection of utilities, React components, and web components for building web applications.

This is the official DTCG repository for the design tokens specification.