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.
| # | 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 |
|---|---|---|---|
| crimeastar.net | #159,606 | Apache, Bootstrap, Google Hosted Libraries + 6 more | Find emails |
| pereirinha.com | #159,615 | Apache, Backbone.js, Bootstrap + 9 more | Find emails |
| uasb.edu.ec | #159,748 | AddThis, Apache, Backbone.js + 9 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| thws.de | #159,928 | Apache, Bootstrap, Matomo + 6 more | Find emails |
| sfwmd.gov | #160,099 | Azure DNS, Bootstrap, DigiCert + 13 more | Find emails |
| afphabitat.cl | #160,421 | Akamai Edge DNS, Akamai edge/CDN, Akamai mPulse + 12 more | Find emails |
| farside.co.uk | #160,553 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| tczew.pl | #160,713 | All in One SEO, Apache, Font Awesome + 5 more | Find emails |
| customs.gov.az | #160,739 | DigiCert, Google Analytics, Google Tag Manager + 7 more | Find emails |
| thriftanime.nl | #160,897 | Google Ads Conversion, Google Analytics, Google Tag Manager + 8 more | Find emails |
| rathergood.com | #161,147 | Apache, Google AdSense, Google Analytics + 6 more | Find emails |
| showakinen-koen.jp | #161,243 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 9 more | Find emails |
| gearnews.com | #161,497 | Apache, Bootstrap, ConsentMo + 9 more | Find emails |
| dumagueteinfo.com | #161,798 | Bootstrap, Font Awesome, Google Analytics + 18 more | Find emails |
| dairymaster.com | #161,801 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 16 more | Find emails |
| pointstreaksites.com | #162,173 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| instructorsnearme.com | #162,198 | Font Awesome, Foundation, Google Fonts + 6 more | Find emails |
| keiseibus.co.jp | #162,399 | All in One SEO, Google Analytics, Google Fonts + 10 more | Find emails |
| ruvoip.net | #162,743 | Backbone.js, Google Analytics, Google Fonts + 7 more | Find emails |
| rtoinsider.com | #162,782 | Cloudflare edge/CDN, Google Tag Manager, Google Trust Services + 7 more | Find emails |
| blackwiredesigns.com | #163,168 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| veoaifree.com | #163,639 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| nsotelecom.ru | #163,778 | Bootstrap, Font Awesome, Google Fonts + 5 more | Find emails |
| childhub.org | #163,780 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| flhealth.gov | #163,895 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 5 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 →