JavaScript Library & Framework
16,473 of the 965,200 top sites in our Tranco top-1M census run Modernizr (1.7%). A JavaScript library that detects which HTML5/CSS3 features a browser supports, enabling progressive enhancement. Detection is homepage-level HTML/header fingerprinting, so a site can run Modernizr on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | mit.edu | #225 (Tranco) | Find emails |
| 2 | npr.org | #466 (Tranco) | Find emails |
| 3 | uk.com | #532 (Tranco) | Find emails |
| 4 | cornell.edu |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| cloze.com | #120,017 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare Bot Management + 7 more | Find emails |
| lafabriquedelalogistique.fr | #120,020 | Font Awesome, Google Analytics, Google Fonts + 6 more | Find emails |
| islamhouse.com | #120,039 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 1 more | Find emails |
| #563 (Tranco) |
| Find emails |
| 5 | python.org | #747 (Tranco) | Find emails |
| nextyummy.com | #120,153 | Bootstrap, Font Awesome, Let's Encrypt + 1 more | Find emails |
| arinet.com | #120,154 | 6sense, Adobe Fonts (Typekit), Amazon Route 53 + 14 more | Find emails |
| datasheetpdf.com | #120,160 | Google AdSense, Let's Encrypt, jQuery | Find emails |
| crisis.org.uk | #120,170 | ASP.NET, Axios, Bootstrap + 10 more | Find emails |
| jadaliyya.com | #120,197 | ASP.NET, Google Analytics, Google Fonts + 9 more | Find emails |
| fc-net.fr | #120,407 | Bootstrap, Calendly, Font Awesome + 5 more | Find emails |
| estream.com | #120,434 | Bootstrap, Chart.js, Cloudflare Bot Management + 9 more | Find emails |
| hintup.io | #120,460 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| 7calendar.com | #120,556 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| bookmarketmaven.com | #120,694 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| hs-duesseldorf.de | #120,750 | ASP.NET, Matomo, Microsoft 365 + 1 more | Find emails |
| mdcomune.com.br | #120,779 | Bootstrap, Font Awesome, Google Analytics + 10 more | Find emails |
| parcelforce.com | #120,831 | Akamai Bot Manager, Akamai mPulse, Drupal + 3 more | Find emails |
| tld.md | #120,833 | Bootstrap, Cloudflare edge/CDN, Font Awesome + 3 more | Find emails |
| maximus-systems.com | #120,917 | Google Fonts, Microsoft 365, Nginx + 2 more | Find emails |
| servelink.com | #121,032 | Bootstrap, DigiCert, Font Awesome + 3 more | Find emails |
| thisisstatic.com | #121,055 | Adobe Fonts (Typekit), Google Analytics, Let's Encrypt + 3 more | Find emails |
| snake.io | #121,074 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| bookmarkalexa.com | #121,109 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 6 more | Find emails |
| barrabes.com | #121,157 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 3 more | Find emails |
| africacenter.org | #121,166 | Cloudflare, Cloudflare edge/CDN, Fathom + 5 more | Find emails |
| mightytext.net | #121,195 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 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 →