21st.dev
Agent75Agent Readiness: 75/100. Top 25%. Measured by StartupHub.ai. Median 41.Trust87Data Trust: 87/100. Top 25%. Measured by StartupHub.ai. Median 61.Moat38Reproducibility: 38/100. Bottom 25%. Graded by StartupHub.ai. Median 62.AI-powered design tools and workflows.
About
21st.dev is a platform for discovering and creating reusable UI components, featuring a vast library of pre-built elements and AI-powered tools. Their "Magic Chat" and "1Code" products enable developers to generate and customize UI components using natural language, streamlining frontend development. The platform serves developers looking for efficient ways to build user interfaces.
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Key facts
- Website
- 21st.dev
- Headquarters
- San Francisco, United States
- Founded
- 2024
- Total funding
- $500K (Seed)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Lead investors |
|---|---|---|---|
| 1 Jan 2026 | Seed | $500K |
Tech stack
Detected on 21st.dev, last scanned 2 Nov 2026. Run your own scan
- Frontend
- Next.js, Tailwind CSS, Bootstrap
- Auth
- Clerk
- Analytics
- Google Analytics 4, Google Tag Manager, Meta Pixel
- CDN
- Vercel
- Email provider
- Google Workspace
- Status page
- BetterStack
21st.dev scores 72. Does yours?
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Frequently asked
Is 21st.dev trustworthy and reputable?
StartupHub's Data Trust & Reputation score for 21st.dev is 87 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has 21st.dev raised?
21st.dev has raised a total of $500K in funding. The most recent round on record is Seed.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for 21st.dev
