Uncode UI vs 21st.dev
Last updated: 2026-10-27. Facts about 21st.dev checked on 2026-10-27 from public information; check their site for current terms.
21st.dev is a community marketplace of React and Tailwind components. Uncode UI is a curated catalogue with licence checks and an audit of every preview. Both are places to find components; they are organised differently.
At a glance
| Uncode UI | 21st.dev | |
|---|---|---|
| What it is | A curated catalogue of 1,747 components from 14 libraries | A community marketplace where designers and developers publish React and Tailwind components |
| Where components come from | Imported open-source libraries plus components written for the catalogue | Submitted by community authors |
| Licensing | Checked at the source repository and recorded on the licence page; libraries that forbid selling are refused | Set per component by its author, so check the one you use |
| Previews | Every card is the real component running, audited and published | Live previews on component pages |
| Editor integration | MCP server and shadcn CLI registry | Offers its own editor integration |
| Price | Free plan with 4 copies a week; paid plans for unlimited copies | See their site for current plans |
When 21st.dev is the better choice
When you want the newest community submissions and the widest range of authors, and you are happy to check each component's licence yourself.
When Uncode UI helps
When you want licences verified in one place before you ship in client work, and previews that are audited as running rather than assumed to run.
Using both
They are not exclusive. Many people browse a marketplace for ideas and use a catalogue with checked licences for what goes into a client project.
Try it
The whole catalogue is open to browse and preview without an account. Open the catalogue, or read what Uncode UI is.