21st.dev

21st.dev is a community registry of more than 12,000 React and Tailwind CSS components, templates, shadcn themes and shaders, each credited to the design engineer who made it and previewed live. Every component ships as a prompt you paste into Cursor, Claude Code, v0 or another agent, which rebuilds it in your codebase, with a shadcn CLI command as the classic alternative. Browsing is free with two copies a day, and a membership unlocks unlimited copies and paid templates.