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Best UI libraries in 2026

Component libraries and styling tools for building interfaces. 13 tools, ranked by live GitHub and npm numbers.

UI Libraries comparisons

All 14 comparisons

Alternatives

How to choose

UI libraries come in three forms. Styled libraries ship finished components with a default look. Unstyled libraries, also called headless or primitives, handle behavior and accessibility and leave the look to you. Copy-in collections give you component source code to keep in your own project.

Choose by how much of the look you want to own. A styled library is fastest for dashboards and internal tools. Unstyled primitives suit teams building their own design system. Check that the library supports your framework before anything else.

What to compare

  • Styled, unstyled or copy-in components
  • Frameworks supported
  • Number of components
  • How styling works: CSS framework, CSS-in-JS or plain CSS
  • Accessibility support
  • License, and any paid components

Questions

What is a headless UI library?

It provides the behavior of components, such as keyboard handling, focus and accessibility, with no styling. You add the look yourself, which makes it a good base for a custom design system.

Should I mix two component libraries?

It is better to pick one. Two styled libraries add weight to the page and rarely look consistent together. Pairing one styled library with unstyled primitives for the gaps works well.

Are these libraries free?

Most are open source and free. A few sell extra components or templates on top of a free core. Each tool page lists the license and anything that is paid.

Best UI libraries in 2026, ranked by real usage | ScratchDB