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 |
|---|---|---|---|
| flightsimcontrols.com | #703,479 | Let's Encrypt, Nginx, PHP + 5 more | Find emails |
| mvp-peptides.com | #703,522 | Bootstrap, Google Fonts, Google Tag Manager + 7 more | Find emails |
| multinet24.pl | #703,692 | Apache, Bootstrap, Font Awesome + 8 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| spriomais.com.br | #703,867 | Apache, Cloudflare, Google Analytics + 8 more | Find emails |
| fadc.org.br | #703,996 | AppNexus, Azure DNS, Drupal + 15 more | Find emails |
| musisol.com | #704,035 | Bootstrap, Doofinder, Fancybox + 8 more | Find emails |
| cbdfx.co.uk | #704,096 | Awin, Bootstrap, Cloudflare + 14 more | Find emails |
| starhawk.org | #704,125 | Apache, Google Fonts, Let's Encrypt + 11 more | Find emails |
| via-trm.com | #704,243 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 10 more | Find emails |
| acf-extended.com | #704,274 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| stromasoft.com | #704,301 | Google Workspace, Let's Encrypt, Nginx + 4 more | Find emails |
| gohl.ca | #704,405 | AngularJS, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| humanrightshouse.org | #704,513 | Apache, Bootstrap, Cookie Information + 10 more | Find emails |
| americanpistachios.org | #704,671 | Adobe Fonts (Typekit), Apache, Cloudflare + 10 more | Find emails |
| defendingbigd.com | #704,832 | Cloudflare Turnstile, Coral, DoubleClick (Google Ads) + 14 more | Find emails |
| ignitewoo.com | #704,913 | Backbone.js, Bootstrap, Cloudflare + 11 more | Find emails |
| ntnamericas.com | #705,098 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| bioaufvorrat.de | #705,275 | Amazon Pay, Apache, Let's Encrypt + 8 more | Find emails |
| reallybadapps.com | #705,568 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 5 more | Find emails |
| esaudihost.com | #705,641 | All in One SEO, Apache, Bootstrap + 10 more | Find emails |
| runningwithscissors.com | #705,729 | Cloudflare, Cloudflare edge/CDN, Divi + 6 more | Find emails |
| visit.cern | #705,810 | Bootstrap, Drupal, Matomo + 8 more | Find emails |
| healthcoalition.ca | #705,853 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| tempestcsgo.ru | #705,878 | Font Awesome, Let's Encrypt, WordPress + 2 more | Find emails |
| digi-fans.com | #705,955 | Apache, Bootstrap, Font Awesome + 7 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 →