21st
21st is huge community library. It is ranked #39 on the Design Radar, in UI component libraries, first seen 13 days ago and shared in 7 posts (92.1k views).
What 21st says about itself
12,000+ hand-crafted React and Tailwind CSS components, templates, and shadcn themes by real design engineers. Preview live, install with one command — for you and your AI agent.
What people said about 21st on X
the best modern UI component libraries on the internet right now. most have built-in micro interactions. Copy, paste, ship. save these 👇 https://ui.spectrumhq.in - components that look expensive http://21st.dev - huge community library https://www.shadcnblocks.com - 2104+ shadcn blocks http://reactbits.dev - clean…
— @arihantCodes, 9 days ago · 753 likes · see the post
proud to see https://interior.dev as library of the month
— @ozzyxs1a, 9 days ago · 95 likes · see the post
If Spectrum UI saved you hours of dev time, consider supporting its growth! Every sponsorship helps keep components free & updated. 🔗 https://github.com/sponsors/arihantcodes
— @arihantCodes, 8 days ago · 48 likes · see the post
Alternatives to 21st
- Spectrum UI — components that look expensive
- ObsidianUI — just hit 56K+ pageviews🔥
- kobra.systems — a shadcn library with docs that are easy to read
- Rare UI — rare and unique components
- Bencho — Bencho - UI interactive blocks
- Shoogle — Search shadcn UI blocks, components and templates across the shadcn registries
21st in numbers
- Rank on the Design Radar: #39 of 316
- Shared in 7 posts by 4 accounts: @arihantCodes, @ozzyxs1a, @21st_dev, @FareaNFts
- 92.1k views on those posts
- First seen 13 days ago, last shared 3 days ago
- Pricing seen by Jev: not stated
- Market: UI component libraries
FAQ
What is 21st?
huge community library It was first shared on X 13 days ago and is ranked #39 on the Design Radar.
Is 21st free?
Pricing is not stated on the page we read.
Who shared 21st?
4 accounts on X, including @arihantCodes, @ozzyxs1a, @21st_dev, in 7 posts totalling 92.1k views.
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 4k posts from 1.4k X accounts over the last 21 days, 316 tools, 17 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-19 02:08 UTC. Full method.