Radix UI

Radix UI delivers unstyled, accessible React primitives for building high-quality design systems with zero styling constraints.

Radix UI delivers 26+ low-level React primitives (including Dialog, Popover, and Menubar) that handle the heavy lifting of WAI-ARIA compliance and keyboard interactions. Maintained by WorkOS: this library decouples component logic from aesthetics so developers can apply custom styles using Tailwind CSS or CSS-in-JS. With over 130M monthly downloads, it provides the accessible foundation (focus management and screen reader support) required for high-end design systems without imposing a specific visual identity.

https://www.radix-ui.com/