Composable, accessible components with thoughtful defaults. Build your own component library with code you can customize, extend, and make your own.
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Full-stack web application template with FastAPI, React, SQLModel, PostgreSQL, Vite, Tailwind CSS, shadcn/ui, FastAPI Cloud, and Docker Compose.
Clone any website with one command using AI coding agents
Modern React starter kit with Bun, TypeScript, Tailwind CSS, tRPC, Stripe, and Cloudflare Workers. Production-ready monorepo for building fast web apps.
A full-featured, hackable Next.js AI chatbot built by Vercel
Rich-text editor with AI and shadcn/ui
coss.com/ui is the official design system of Cal.com
WebGPU components for React, Vue, Svelte, Solid, JS & Framer
Isometric line figures that answer the pointer. For React and for anything with a DOM.
A design system for AI applications. Material, physical, tactile, technical.
Free open-source bookmark manager with customisable nested tags. Super fast and lightweight. All data is stored locally.
Arc Library: free, open source React components with calm motion. Copy the code or install with the shadcn CLI.
In Browser PostgreSQL Playground, no server, just client and pglite (postgresql wasm)
UI for AI agents. React components for what agents do – agent trees, tool calls, traces, handoffs and approvals – and for the rest of your app. One file each, install with shadcn or via MCP. Free and open source.
Open source browser extension starter kit 🧩
Ruixen UI – A modern, flexible, and customizable UI component library built for speed, scalability, and developer happiness.
Keeps coding agents on your design system: catches palette colors, native elements and APIs your system lacks, at every edit and pull request, with the fix. Set it up once in your design-system package; every app in your monorepo gets it.
Inject React components into 3rd-party sites using ShadowDOM with ease (and without troubles with styles)! Particularly useful in browser extensions
AnywhereUI is a collection of rich web components that includes framework bindings, created with StencilJS