21st: 12,000+ React Components, Templates, and shadcn Themes
Content is AI-assisted and may contain inaccuracies.
21st is a community catalog of interface code built by design engineers, spanning 12,000+ React components, full page templates, shadcn themes, shaders, and gradients. Entries can be previewed live in the browser rather than judged from screenshots.
Each component exposes an AI-ready prompt that an agent such as Cursor, Claude Code, v0, or Lovable can consume to install the code into a project, which removes the copy-and-paste step for agent-driven workflows. The catalog is community-maintained, so additions come from working design engineers.