Kuma UI

Kuma UI is an open-source styling and component library that focuses on providing a headless, utility-first approach to building modern web interfaces. The framework emphasizes performance by extracting CSS at build time, allowing developers to create fast websites without requiring runtime styling engines in the browser. By combining utility-first styling with headless component patterns, Kuma UI allows developers to fully customize visual appearance while relying on reusable component logic. The library is designed to work particularly well with modern React and Next.js development workflows and supports advanced features such as React Server Components. It also offers an API designed to feel familiar to developers who already use popular styling solutions, which improves developer productivity and adoption. Because Kuma UI avoids heavy runtime processing, applications built with it can achieve faster rendering and reduced bundle sizes.