Mantine

Mantine is a React UI library that covers most of what an application needs out of the box: inputs, buttons, overlays, navigation, data display and layout components, all accessible and themeable through a single theme object with built-in dark mode. Styling is done with plain CSS modules and CSS variables, so it works with server components and doesn't require a CSS-in-JS runtime.

Beyond the core, separate packages add form state management, date pickers, charts, notifications, a spotlight command palette, dropzones and a rich text editor, and @mantine/hooks is usable on its own. A good fit for React and Next.js teams who want a complete, consistent component set without assembling one from many libraries.