21st.dev

21st.dev is the React components marketplace for shadcn/ui ecosystem, founded in 2024 by Daniil Bratchenko as a community platform for high-quality copy-paste React components built on shadcn/ui foundations. The pitch is direct: shadcn/ui gives you primitives (Button, Card, Dialog), but most modern web apps need more sophisticated components (Hero sections, pricing tables, dashboard layouts, animated effects). 21st.dev is the marketplace where developers + designers contribute copy-paste-ready advanced components and templates — installable via CLI similar to shadcn's installation pattern. What makes 21st.dev relevant is the timing + ecosystem fit + community model. shadcn/ui exploded in 2023-2024 as the React component library default. The natural next question: where do you find pre-built advanced components beyond primitives? 21st.dev answers that question by becoming the canonical community marketplace for shadcn-compatible components. Contributors submit components, the community curates + improves them, developers install via CLI into their projects. The result is a rapidly-growing library of beautifully-designed advanced components that drop into shadcn/ui projects seamlessly. The core feature set: • **Component marketplace** — thousands of community-contributed React components built on shadcn/ui • **shadcn-compatible CLI install** — `npx shadcn add` to install components from 21st.dev directly • **Categories** — hero sections, pricing tables, navigation menus, dashboards, animated effects, forms, cards • **Preview + live demos** — see components in action before installing • **Source code visible** — inspect component code before installing • **Author profiles** — follow specific designers/developers contributing quality components • **Tailwind CSS + Framer Motion** — most components use Tailwind for styling + Framer Motion for animations • **TypeScript** — fully typed components matching shadcn/ui patterns • **AI search** — find components by describing what you want in natural language • **Magic MCP** — AI integration generating custom components based on your design specs • **Templates + starter kits** — complete page templates for marketing sites + apps • **Pro tier components** — premium quality components from professional designers • **Community engagement** — likes + saves + collections + follows • **API + integrations** — programmatic access to component library • **Free + paid components** — mix of free community contributions + paid premium components For React developers + technical founders + design teams the use cases: • **Building modern SaaS apps faster** — skip primitive component construction with pre-built advanced components • **Marketing site sections** — pre-built hero sections + pricing tables + feature sections • **Dashboard + admin UI** — pre-built dashboard layouts + admin components • **Animated UI effects** — Framer Motion-based animations without learning Framer Motion • **Form + auth components** — pre-built signup/login + complex forms • **Component inspiration** — browse high-quality React component implementations • **AI-generated custom components** — Magic MCP for generating components from descriptions • **Solo founder MVP development** — assemble React apps from marketplace components vs building from scratch The pricing is freemium with paid components option. Free tier covers most community-contributed components — install via CLI freely. Pro at $20/month unlocks premium components from professional designers + advanced features (custom AI generation, private components, team workspaces). Magic MCP (AI component generation) included at premium tier. Compared to designing custom components from scratch + building React implementations, 21st.dev saves substantial time + costs. Compared to general React component libraries (Material UI, Ant Design, Chakra) that ship as packages, 21st.dev's copy-paste model matches shadcn/ui's philosophy. Where 21st.dev wins clearly: ecosystem fit with shadcn/ui is the differentiator — natural marketplace for the dominant React component pattern in 2026; community contribution model means rapidly growing library; copy-paste model preserves shadcn/ui's full-customisation advantage; AI integration (Magic MCP) genuinely useful for custom component generation; pricing is reasonable with substantial free tier; the Framer Motion integration brings animations within reach for developers; preview + live demos eliminate guessing about quality. Where it loses: quality varies across community contributions (mostly good but some duplicates + low-quality entries); fewer total components than dedicated component libraries (Material UI has thousands; 21st.dev growing but smaller); 21st.dev-specific to shadcn/ui + Tailwind stack (doesn't help non-Tailwind projects); the marketplace model means some components require Pro tier (mixed free + paid can feel inconsistent). My take: for React developers building modern apps in 2026 using shadcn/ui (which is most React projects) — 21st.dev is essentially mandatory tooling and the free tier alone provides substantial value. Browse the marketplace + grab pre-built sections for marketing sites, dashboards, forms. The Pro tier ($20/month) is worth it for active development with premium component access + Magic MCP AI generation. For non-React projects or non-Tailwind stacks, 21st.dev isn't directly useful but the pattern (community-contributed copy-paste components for popular component library) is increasingly the model — expect Vue + Svelte equivalents to emerge following similar pattern. The shadcn/ui + 21st.dev combo is the dominant React frontend pattern in 2026 and continues accelerating.