About Lerpa UI
Lerpa UI is a free, open-source component library for React 19 and Tailwind CSS v4. Every component is copy-paste source you own — distributed through a shadcn-compatible registry, installable with one CLI command.
What we are
A catalog of 1179 live component demos, 178 page blocks, and 1318 shadcn-compatible registry items, built on React 19, Next.js 16, Tailwind CSS v4, TypeScript, and Framer Motion. Components ship with motion baked in, a CSS-variable token system, and accessibility as a hard requirement.
What we believe
- You own the code. Components are written into your repo as plain
.tsxfiles — no black-box dependency to version-lock. - Accessibility is not optional. Components target WCAG 2.1 AA, are axe-tested, keyboard-navigable, and respect
prefers-reduced-motion. - Agent-ready. A machine-readable llms.txt and an MCP server let AI assistants search and install components for you.
- Free, forever. MIT licensed — use it in personal and commercial projects with no attribution requirement.
The stack
React 19 · Next.js 16 · Tailwind CSS v4 · TypeScript 5.7 · Framer Motion 12 · Radix UI. Quality is gated by 86 test files and 471 assertions.
Open source
Lerpa UI is developed in the open. Read the source, file issues, or contribute on GitHub. See the changelog for what shipped, the contributing guide to get involved, or the showcase for teams building with it.