Storybook

Storybook lets you build and test UI components outside your application. Each component gets its own page with controls for props, viewport sizes, and states. For teams sharing component libraries across projects, it's the documentation and development environment in one.

The real value is visual testing. Render every component variant, catch regressions before they reach production, and give designers a living reference instead of stale Figma files. We use Storybook for shared admin UI components where multiple applications consume the same library.