JavaScript Library & Framework
40,938 of the 965,200 top sites in our Tranco top-1M census run React (4.2%). Meta's component-based UI library, the most widely used modern JS framework. Detection is homepage-level HTML/header fingerprinting, so a site can run React on other pages without it showing here.
Other javascript library & framework
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | amazonaws.com | #9 (Tranco) | Find emails |
| 2 | fastly.net | #35 (Tranco) | Find emails |
| 3 | yahoo.com | #56 (Tranco) | Find emails |
| 4 | vimeo.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| printfriendly.com | #16,678 | Amazon Advertising, Amazon CloudFront, Cloudflare + 6 more | Find emails |
| changelly.com | #16,712 | Cloudflare, Cloudflare edge/CDN, Customer.io + 2 more | Find emails |
| xapo.com | #16,744 | Amazon CloudFront, Amazon Route 53, Cloudflare edge/CDN + 2 more | Find emails |
| #71 (Tranco) |
| Find emails |
| 5 | windows.com | #88 (Tranco) | Find emails |
| treccani.it | #16,747 | Amazon (ACM), Amazon CloudFront, Microsoft 365 + 4 more | Find emails |
| virgin.com | #16,758 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| lmstudio.ai | #16,760 | Cloudflare, Cloudflare edge/CDN, Google Trust Services + 2 more | Find emails |
| specialized.com | #16,765 | Cloudflare edge/CDN, DigiCert, Klarna + 2 more | Find emails |
| groq.com | #16,768 | Cloudflare, Google Tag Manager, Let's Encrypt + 2 more | Find emails |
| openreview.net | #16,774 | Cloudflare, Cloudflare Turnstile, Google Analytics + 7 more | Find emails |
| wartsila.com | #16,790 | Cloudflare edge/CDN, Google Tag Manager, Google Trust Services + 2 more | Find emails |
| zalando.se | #16,798 | Akamai Bot Manager, Amazon Route 53, Let's Encrypt | Find emails |
| cohere.com | #16,818 | Cloudflare, Let's Encrypt, Next.js + 3 more | Find emails |
| tuttosport.com | #16,821 | Amazon Route 53, Google Analytics, Google Fonts + 3 more | Find emails |
| cheaptickets.nl | #16,833 | Akamai Edge DNS, Cloudflare Web Analytics, DigiCert + 6 more | Find emails |
| leafly.com | #16,838 | Amazon Route 53, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| arsenal.com | #16,840 | Akamai Edge DNS, Google AdSense, Let's Encrypt + 1 more | Find emails |
| fotogramas.es | #16,876 | Amazon Route 53, Microsoft 365, Next.js + 2 more | Find emails |
| costar.com | #16,879 | Akamai Bot Manager, Akamai Edge DNS, Akamai mPulse + 9 more | Find emails |
| aau.dk | #16,887 | Google Tag Manager, Let's Encrypt, Microsoft 365 + 2 more | Find emails |
| quince.com | #16,893 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| cleartax.in | #16,895 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 5 more | Find emails |
| hl.co.uk | #16,896 | Amazon CloudFront, Cloudflare, DigiCert + 5 more | Find emails |
| yuque.com | #16,904 | Blogger, DigiCert, Moment.js + 1 more | Find emails |
| ibotta.com | #16,920 | Adobe Fonts (Typekit), Amazon (ACM), Amazon CloudFront + 5 more | Find emails |
| humana.com | #16,921 | DigiCert, Dynatrace, Next.js + 5 more | Find emails |
Showing the first 10,000matches — add a filter to narrow.
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 965,200-domain Tranco top-1M census (run top1m-2026-08-20-full), snapshot August 21, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →