Open source
StyleX
Styling system from Meta for large, performance-focused interfaces
Tailwind and CSSMeta CSS in JS system
12 tools like UnoCSS, chosen by what they do. About UnoCSS

Styling system from Meta for large, performance-focused interfaces





React and Tailwind UI components, blocks and templates

CSS custom properties for consistent design tokens

CSS-in-JS for React with SSR and React Native support

Lightweight, modular front-end framework for web interfaces

Utility-first CSS framework for building designs directly in markup

Tailwind design system toolkit with components for many frameworks
Popular icon sets for React projects, loaded one icon at a time