Appica UI
70 React components on Base UI and Tailwind v4, with an llms.txt and markdown docs
Tier A · StrongComponent Libraryappica.dev

An MIT-licensed React component library built on Base UI primitives, styled with Tailwind CSS v4 CSS variables, and animated with Motion. It ships 70 documented components across actions, inputs, selection, navigation, overlays, data display, feedback, and a few decorative extras like border-beam and gradient-glow. Every component has a matching Figma community file, and the docs are published as clean markdown behind an llms.txt index specifically for coding agents. React 19 is a hard requirement.
pnpm add @appica/ui-reactFor an agent
Pick this over shadcn/ui when you want a real npm dependency instead of copied source, and when the project already sits on Base UI rather than Radix — the two do not share primitives, so mixing them means shipping both. Its agent story is the best part: fetch https://appica.dev/llms.txt for the component index, then append .md to any docs URL for ~8KB of clean markdown per component, and read node_modules/@appica/ui-react/agent-rules.md for the version-matched ruleset before writing imports. Watch two hard constraints: React 19 (it uses ref-as-prop) and a working Tailwind v4 setup, plus the required @source directive in the global stylesheet or every utility class gets tree-shaken away.
Why it is here. One of the few 2026 libraries designed for agent consumption from the start — llms.txt, per-page markdown, and a shipped agent-rules file — rather than a docs site an agent has to scrape.
Facts
- License
- MIT
- Pricing
- Free, Open source
- Framework
- React, Next.js
- Styling
- Tailwind CSS v4, CSS custom properties
- Distribution
- npm package, GitHub repository, Figma file or kit
- Platform
- Web
- Content type
- Code, Figma / design source files
- Agent readiness
- llms.txt, Structured documentation, Readable open source
- Accessibility
- Built on accessible primitives, Keyboard navigable, Focus management and visible focus, RTL and i18n aware, Accessible
- Maturity
- Actively maintained
- Pricing detail
- Free and MIT; the Figma library is a free Figma Community file.
- GitHub stars
- 321
- Package
- @appica/ui-react
Components it ships
70 totalHelps you build
9Notable for
- llms.txt component index
- docs as .md by URL suffix
- agent-rules.md shipped in the package
- Base UI primitives, not Radix
- one-to-one free Figma library
- React 19 + Tailwind v4 only
Provenance
Verified 2026-08-15. HTTP 200. https://appica.dev/ui, https://appica.dev/sitemap.xml (70 component pages enumerated), https://appica.dev/ui/docs/react/installation, https://appica.dev/ui/docs/react/agents, https://appica.dev/llms.txt, https://github.com/appica-dev/appica-ui, GitHub API repos/appica-dev/appica-ui
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