Base UI v1.0 Unstyled UI Components from the Creators of Radix and MUI
After two years of development (and endless bikeshedding), we’ve finally pushed Base UI v1 out the door. Base UI is an unstyled UI library for building accessible component libraries and user interfaces with React. 35 accessible, configurable, composable, customizable components with a focus on a11y. Base UI is already in production at startups like Paper, Zed, and Unsplash, and being trialled by larger companies like GitHub and Vercel. There is a growing community of open-source libs built on top of it, such as Coss UI, Basecn, 9UI, and Pure UI. Since Base UI doesn’t bundle any styles, it…
Base UI v1.0 Unstyled UI Components from the Creators of Radix and MUI launched on December 12, 2025 with 16 votes, #635 of 11,628 launches that month and more than 75% of that year's launches.
In plain words
Base UI is an unstyled React component library offering 35 accessible, configurable components designed for building custom user interfaces and component libraries. Created by the team behind Radix and MUI, it provides building blocks without bundled styles, allowing developers to apply styling through Tailwind, CSS Modules, CSS-in-JS, or other solutions. The library is used in production by startups including Paper, Zed, and Unsplash, with trials at larger companies like GitHub and Vercel.
written from the facts on this page · September 2026
From the sources
Unstyled UI components for building accessible web apps and design systems. From the creators of Radix, Floating UI, and Material UI. - mui/base-ui
In the maker’s words, at launch
After two years of development (and endless bikeshedding), we’ve finally pushed Base UI v1 out the door. Base UI is an unstyled UI library for building accessible component libraries and user interfaces with React. 35 accessible, configurable, composable, customizable components with a focus on a11y. Base UI is…
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