Rad UI is a headless, accessible, and high-performance UI component library for React. Whether you're building a design system, scaling a large product, or hacking on a side project, Rad UI gives you complete control over how your components look and behave.
Designed for speed and flexibility, it offers unstyled, composable primitives that adapt to your needs — not the other way around. Built on the foundations of proven design systems, Rad UI helps you ship consistent, accessible UIs without compromising on developer experience.
Join developers worldwide using Rad UI to build beautiful, fast, and reliable interfaces.
Rad UI is built with design systems in mind. Every component is unstyled by default, giving you complete control over presentation and allowing seamless integration with your tokens, spacing scales, typography, and themes. Whether you're building a design system from scratch or plugging into an existing one, Rad UI provides the flexibility and composability needed to enforce visual and interaction consistency across your product.
You don’t have to commit to a full rewrite. Rad UI is designed to coexist with your existing components and styles, so you can introduce it incrementally — one feature, view, or component at a time. Replace legacy code or modernize critical parts of your UI without breaking the rest of your system. This flexibility makes it easy to evaluate and scale Rad UI as your needs grow.
Accessibility isn't a layer you bolt on later — it's baked in from the start. Rad UI components are built to meet WCAG standards wherever possible, including proper ARIA roles, keyboard navigation, and focus management. That means you can ship interfaces that work for everyone — including users relying on assistive technologies — without having to build all the logic yourself.
Rather than locking you into opinionated patterns or one-size-fits-all components, Rad UI gives you foundational primitives that can be composed together however you need. Inspired by the Radix philosophy, each component exposes a clean, low-level API that prioritizes flexibility over prescription.
You can build complex UIs from simple, predictable building blocks that are easy to understand, test, and reuse — no hidden behavior, no styling assumptions. Rad UI extends this pattern further with improvements in ergonomics, customization hooks, and support for modern styling tools out of the box.
You stay in control of structure, styling, and behavior at every layer, making it easy to adapt components to your product’s unique needs without friction.
Rad UI is engineered for performance. Components avoid unnecessary DOM updates, reduce re-renders through thoughtful state management, and stay lightweight by design. This ensures your UI stays fast and responsive, even as your application scales in complexity.
Rad UI is made by developers, for developers. You'll find intuitive APIs, predictable patterns, and first-class TypeScript support across the board. The documentation is structured for clarity and depth, making it easy to get up and running — whether you're building your first prototype or architecting a full design system.
Rad UI doesn't enforce any styling system or CSS methodology. Use Tailwind, SCSS, CSS Modules, vanilla CSS, or anything else — the choice is yours. Components ship with no styles or resets, so they drop cleanly into any stack without side effects. This lets you maintain full control over your visual language without fighting against baked-in styles.
Rad UI provides default CSS and a theme out of the box, so you can get started without worrying about initial setup. However, if you want to progressively adopt your own design system or style guidelines, Rad UI makes it easy to detach components from the default styling.
Rad UI is ideal for developers who want full control over their UI components without compromising on accessibility or performance. Whether you're building a design system, working on a large-scale web application, or experimenting with a side project, Rad UI provides you with the foundational building blocks to create a scalable and consistent user interface.
Design System Builders: Seamlessly integrate Rad UI into your own design system. Its unstyled components allow you to apply your design tokens, themes, and custom styles effortlessly, so you can maintain your brand's identity while leveraging a solid, accessible foundation.
Product Teams & Developers: Rad UI fits perfectly into large-scale applications, enabling you to craft a UI that's both functional and visually aligned with your product’s needs. It works well with other libraries and can be customized to fit alongside your existing toolchain and styling approach.
Solo Developers & Side Projects: Whether you’re creating a personal app or building a quick prototype, Rad UI gives you the power to craft a polished UI without getting bogged down by styling decisions or accessibility concerns. You get high-quality components, out-of-the-box accessibility, and performance without the overhead.
Rad UI is built on proven design systems and follows best practices for UI/UX design. It ensures that your product doesn’t just look great — it works reliably for all users. Whether you’re shipping a consumer app, internal tools, or experimenting with new ideas, Rad UI supports you in delivering a great user experience and a developer-friendly workflow.
Join developers around the world who are using Rad UI to build faster, ship better products, and stay in full control of their UI components.