JavaScript Library & Framework
6,289 of the 1,000,000 top sites in our Tranco top-1M census run Underscore.js (0.6%). A utility JavaScript library providing functional helper methods for working with arrays, objects, and functions. Detection is homepage-level HTML/header fingerprinting, so a site can run Underscore.js on other pages without it showing here.
Other javascript library & framework
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | uk.com | #532 (Tranco) | Find emails |
| 2 | washington.edu | #773 (Tranco) | Find emails |
| 3 | eu.com | #891 (Tranco) | Find emails |
| 4 | us.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| promart.pe | #19,840 | Amazon CloudFront, Bootstrap, Contentful + 12 more | Find emails |
| oechsle.pe | #20,393 | Amazon CloudFront, Bootstrap, Contentful + 13 more | Find emails |
| justthegays.com | #20,789 | Bluesky, Bootstrap, Google Analytics + 10 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| femina.hu |
| #20,872 |
| Apache, DoubleClick (Google Ads), Google Analytics + 10 more |
| Find emails |
| nlc.hu | #20,879 | All in One SEO, Amazon Route 53, Nginx + 3 more | Find emails |
| badische-zeitung.de | #20,975 | Chartbeat, Cloudflare edge/CDN, Google Tag Manager + 4 more | Find emails |
| freifunk-stuttgart.de | #21,092 | Fancybox, Google Fonts, Let's Encrypt + 3 more | Find emails |
| ofweek.com | #21,182 | Baidu Analytics, DigiCert, Font Awesome + 5 more | Find emails |
| lactld.org | #21,619 | Apache, Font Awesome, Google Analytics + 11 more | Find emails |
| sysu.edu.cn | #21,634 | Drupal, Matomo, Slick Carousel + 2 more | Find emails |
| thefederalist.com | #21,664 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Bot Management + 16 more | Find emails |
| teleticket.com.pe | #21,717 | Axios, Azure API Management, Azure DNS + 18 more | Find emails |
| gratisafhalen.be | #21,783 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| orchisasia.org | #21,820 | AOS, Bootstrap, Cloudflare + 10 more | Find emails |
| cofidis.fr | #22,149 | Bootstrap, Toastr, Trustpilot + 2 more | Find emails |
| dikidi.net | #22,280 | Bootstrap, Django, Fancybox + 13 more | Find emails |
| pumo.com.tw | #22,492 | All in One SEO, Font Awesome, Google Analytics + 5 more | Find emails |
| renee.pl | #22,591 | AddToAny, Cloudflare, DigiCert + 12 more | Find emails |
| thcservers.com | #22,879 | AOS, AdRoll, Cloudflare + 21 more | Find emails |
| mining.com | #23,521 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 20 more | Find emails |
| teapuesto.pe | #23,895 | Backbone.js, DigiCert, Font Awesome + 10 more | Find emails |
| wordcamp.org | #23,951 | Font Awesome, Google Fonts, Google Tag Manager + 8 more | Find emails |
| noblogs.org | #23,952 | Font Awesome, Google Fonts, Let's Encrypt + 3 more | Find emails |
| gamespy.com | #24,681 | AddThis, Amazon Route 53, Disqus + 7 more | Find emails |
| witanime.you | #24,686 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
From the Crawlora Website Tech Stack Dataset, a homepage-level fingerprint of a 1,000,000-domain Tranco top-1M census (run top1m-2026-08-25-full-v2), snapshot August 29, 2026. Directional, not exhaustive — fully custom or bundled stacks under-detect. Methodology →