Headless UI vs Radix Primitives
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
Unstyled, accessible UI components (React and Vue) that you style yourself, often with Tailwind CSS.
Open source · MIT
Unstyled, accessible React UI components for building your own design system.
The short answer
Choose Headless UI if you need…
- React or Vue developers building custom-designed interfaces
- Teams already using Tailwind CSS who want accessible widgets that match their styling
- Projects that need keyboard and screen reader support without writing it from scratch
Choose Radix Primitives if you need…
- Developers building a custom design system who want accessible base components
- Teams adding accessible interactive widgets to an existing web app incrementally
- React developers who want to control styling themselves
Side-by-side
| Headless UI | Radix Primitives | |
|---|---|---|
| Type | Library | Library |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 28.8k | 19.5k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Install with a package manager | Clone and build from source |
| Main language | TypeScript | TypeScript |
| Last code update | 7 months ago | 22 days ago |
What each one is
Headless UI
Headless UI is a set of interface building blocks such as menus, dialogs and similar widgets for React and Vue. The components come with behavior and accessibility built in but no visual styling, so you control the look with your own CSS, typically Tailwind CSS. It is used by developers who want accessible components without adopting a fixed design system.
Radix Primitives
Radix Primitives is a collection of low-level user interface components, such as building blocks for menus, dialogs and similar controls. The README describes a focus on accessibility, customization and developer experience. Teams can use them as the base layer of a design system or adopt them one at a time.
Best for
Headless UI
- React or Vue developers building custom-designed interfaces
- Teams already using Tailwind CSS who want accessible widgets that match their styling
- Projects that need keyboard and screen reader support without writing it from scratch
Radix Primitives
- Developers building a custom design system who want accessible base components
- Teams adding accessible interactive widgets to an existing web app incrementally
- React developers who want to control styling themselves
Strengths
Headless UI
- Components are unstyled, so they fit into any visual design
- The README describes the components as fully accessible
- Maintained by the Tailwind Labs team and published under the MIT license
Radix Primitives
- Stated focus on accessibility, customization and developer experience
- Can be adopted incrementally rather than all at once
- Open source under the MIT License with a large community following (about 19,400 stars)
Not ideal for
Headless UI
- Anyone who wants ready-made, good-looking components out of the box, since the README says the components are completely unstyled
- Projects not using React or Vue, since the README lists only those two packages
- Beginners with no web development background, since the components require writing your own markup and styles
Radix Primitives
- People who want ready-made, styled components out of the box, since the README describes these as low-level primitives
- Non-developers looking for a finished website or app builder
- Projects that do not use React, since the topics and description point to React
Trade-offs
Headless UI
- Requires you to write your own styling, so it is not a quick visual solution
- The README lists only React and Vue packages and does not describe other frameworks
- Insiders builds do not follow semver, so their APIs may change
Radix Primitives
- Low-level by design, so you must add your own styling and layout work
- The README is short and points to external docs for component details
- No formal release is listed, so you need to check the changelog for versioning
Getting started
Headless UI
Install the React package (latest release)
npm install @headlessui/react@latestInstall the Vue package (latest release)
npm install @headlessui/vue@latestRadix Primitives
Install pnpm
npm install -g pnpmInstall dependencies
pnpm installFrequently asked questions
What is the difference between Headless UI and Radix Primitives?
Headless UI: Unstyled, accessible UI components (React and Vue) that you style yourself, often with Tailwind CSS. Radix Primitives: Unstyled, accessible React UI components for building your own design system. Headless UI suits react or vue developers building custom-designed interfaces, while Radix Primitives suits developers building a custom design system who want accessible base components.
Are Headless UI and Radix Primitives free?
Headless UI: Free and open source. Radix Primitives: Free and open source.
Is Headless UI or Radix Primitives more popular?
Headless UI has more GitHub stars (28.8k) than Radix Primitives (19.5k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to Headless UI and Radix Primitives?
Other options people compare them with include BootstrapVue, HyperUI, Base UI, shadcn/ui, Magic UI.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.