In short
BrowserMoon and 21st.dev solve different layers of the same problem. 21st.dev is a Y Combinator-backed community registry of 12,000+ React and Tailwind components with an MCP server (Magic MCP) that plugs into Cursor, Claude Code, and Windsurf. You search and install individual components from within your editor. BrowserMoon is a library of 1,000+ complete page designs with consistent typography, spacing, and colour systems. You paste a template into any AI coding tool and the AI follows the design. 21st.dev gives you parts. BrowserMoon gives you the whole page.
Side-by-side comparison
| Feature | BrowserMoon | 21st.dev |
|---|---|---|
| What it is | Design template library | Component registry with MCP server |
| How it works | Paste templates into any AI coding tool | Install components via Magic MCP in your editor |
| Scope | Complete page designs with typography, spacing, colour | Individual components (buttons, cards, sections) |
| Framework | HTML, works with any framework | React and Tailwind only |
| Tool compatibility | Lovable, Bolt, Replit, Claude Code, Cursor, and more | Cursor, Claude Code, Windsurf (via MCP) |
| Library size | 1,000+ templates | 12,000+ components |
| Design quality | Professionally designed by senior interaction designers | Community-contributed, quality varies |
| Price | $349 one-time licence | Free (community) |
| Best for | Cohesive page design across an entire project | Grabbing individual UI components quickly |
What BrowserMoon does well
BrowserMoon solves the design consistency problem in vibe coding. When you paste a template into Lovable, Bolt, Replit, or Claude Code, the AI reads exact typography scales, spacing values, and colour tokens. The result looks like it was designed by a professional studio, not generated by AI.
Because templates are plain HTML, they work with any AI coding tool and any framework. You are never locked into a specific editor, a specific stack, or a specific workflow. The library has over 1,000 templates designed by senior interaction designers, covering everything from SaaS products to landing pages to dashboards. Every template in a family shares the same visual identity, so your project looks cohesive from the first page to the last.
What 21st.dev does well
21st.dev is excellent for grabbing individual components fast. The Magic MCP integration means you can search for a component, preview it, and install it without leaving your editor. If you are building in Cursor or Claude Code and you need a specific element, like a pricing card, a navigation bar, or an animated button, 21st.dev gets it into your project in seconds. The 12,000+ component library is large and growing, with contributions from the community.
The trade-off is design coherence. Each component comes from a different contributor with different design sensibilities. Combining five components from five authors into one page can result in inconsistent typography, spacing, and visual weight. The components are also React and Tailwind only. If your project uses Vue, Svelte, or plain HTML, you would need to rewrite each component. And because 21st.dev provides parts rather than pages, you still need to make the design decisions about how those parts fit together.
When to use which
Use BrowserMoon when...
You want a complete, cohesive design for your project. You are building a SaaS product, a landing page, or a dashboard that needs consistent typography, spacing, and visual identity. You want to use any AI coding tool, not just editors with MCP support. You care about design precision over speed of assembly.
Use 21st.dev when...
You need a specific React component quickly. You are working in Cursor, Claude Code, or Windsurf and want MCP-based search and install. Your project is already React and Tailwind. Design consistency across components is less important than speed.
Use both together...
Start with a BrowserMoon template to set the overall design direction for your page. Then use 21st.dev to pull in specific interactive components where you need them. The template gives you the design system. The components fill in the details.
Frequently asked questions
What is the difference between BrowserMoon and 21st.dev?
BrowserMoon is a design template library with 1,000+ complete page designs you paste into any AI coding tool. 21st.dev is a community registry of 12,000+ individual React and Tailwind components you install via an MCP server in editors like Cursor or Claude Code. BrowserMoon gives you full pages with cohesive typography, spacing, and colour systems. 21st.dev gives you individual building blocks like buttons, cards, and sections.
Is 21st.dev free to use?
21st.dev is a free, community-driven component registry. You can browse and install components at no cost. BrowserMoon lets you browse and preview all templates for free. A Moon Licence at $349 (one-time) unlocks the full template code for every template in the library.
Can I use BrowserMoon with Cursor or Claude Code like 21st.dev?
Yes. BrowserMoon templates work with Cursor, Claude Code, and every other AI coding tool. You paste the template HTML into the prompt. 21st.dev uses an MCP server called Magic MCP that integrates directly into Cursor, Claude Code, and Windsurf. The difference is that BrowserMoon gives you a complete page design, while 21st.dev gives you individual components.
Which is better for vibe coding, BrowserMoon or 21st.dev?
It depends on what you need. If you want a cohesive page design with consistent typography, spacing, and visual identity, BrowserMoon is the better choice. If you need a specific component like a pricing table or an animated button and you are already working in React and Tailwind, 21st.dev is a fast way to grab one. Many developers use both. BrowserMoon sets the overall design direction, and 21st.dev fills in individual UI elements.
Does BrowserMoon work with frameworks other than React?
Yes. BrowserMoon templates are complete HTML coding designs with no framework dependencies. They work with React, Vue, Svelte, plain HTML, or any other stack. Your AI coding tool converts the template into whatever framework you are using. 21st.dev components are React and Tailwind only. If you are not using that stack, you would need to adapt each component manually.
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