21st.dev alternative

Choose Annnimate if you want every component on one engine, GSAP, with the same tuning and accessibility contract across the catalog, or if you ship Vue or plain HTML as well as React. 21st.dev is the right call if you live in shadcn and Cursor, want an agent to pull a component into the editor mid-task, and are happy to review each contributor piece yourself.

21st.dev is a community marketplace of React and Tailwind components built on shadcn/ui and Radix, plus an MCP server (the 21st MCP, formerly Magic MCP) that lets AI coding agents like Cursor, Claude Code, and Windsurf search, generate, and install components without leaving the editor. Components come from over 700 independent design engineers rather than one team, so quality and engine choice vary by submission.

• Framework support: React only, built on shadcn/ui and Radix with Tailwind CSS
• Engine: mixed per component, mostly CSS or Framer Motion / Motion, varies by contributor
• Component count: 12,000+ community-submitted components and blocks (as of 2026-09)
• Pricing: no free tier, Builder $6/mo billed yearly, Builder + AI $15/mo billed yearly, Team $7.50/seat/mo billed yearly (as of 2026-09)
• Licensing: MIT on the open-source registry core (serafimcloud/21st, 2.1k+ GitHub stars); individual components carry whatever license their contributor sets

• Largest community marketplace in the shadcn/ui ecosystem, 12,000+ components from 700+ contributors
• The 21st MCP puts component search and generation directly inside Cursor, Claude Code, and Windsurf, no context switch to a browser
• Deep shadcn/ui and Radix integration matches a design system a lot of React teams already run, instead of introducing a new one
• Fast to try: install via the shadcn CLI or paste the generated code straight from the AI agent's chat
• Cited usage at real scale, teams at Google, Meta, and Vercel are named as users of the registry

• React and Tailwind only, no Vue or plain HTML/CSS/JS output
• Mixed engine per component (CSS or Framer Motion / Motion, sometimes neither), so behavior and dependencies differ component to component with no single tuning contract
• No free tier as of 2026-09, every plan is billed yearly ($6-$15/mo for individuals) even to browse past the basics
• Single-component focus: reviewers report no full-page templates and thin error messages (a bare 400 with no hint on what parameter failed)
• Quality and production hardening (accessibility, reduced-motion) vary by contributor since 700+ independent developers submit to the registry, there's no uniform standard across it

Annnimate is the better pick when the motion has to hold together as a system. Every component runs on GSAP with the same documented data-anm-* attributes, so scroll scenes, timelines and text choreography compose without checking which engine each piece brought along. It also fits when React is not the only target, the same component ships in Vue and plain HTML/CSS/JS, and when you'd rather have a catalog built from real client work and hardened once than a marketplace where accessibility and reduced-motion depend on whoever submitted the piece.

21st.dev is the better pick if your stack is React, shadcn and Radix and you build inside Cursor or Claude Code. The MCP that drops a component into the editor without opening a browser is a real workflow advantage, and 12,000 community pieces means there is almost always something close to what you need. If you're after a button or a card that matches your existing shadcn setup and you're willing to review each piece yourself, the $6 a month Builder plan (as of 2026-09) gets you there faster than any curated library will.