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 |
|---|---|---|---|
| spordb.com | #511,942 | Axios, Bootstrap, Font Awesome + 12 more | Find emails |
| openguild.net | #512,135 | Font Awesome, Google Fonts, Let's Encrypt + 6 more | Find emails |
| anipharmaceuticals.com | #512,389 | Apache, Bootstrap, Elementor + 15 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| aliceinchains.com | #513,231 | Apache, Google Fonts, Google Tag Manager + 7 more | Find emails |
| quadrorama.com.br | #513,670 | Google Analytics, Google Fonts, Google Tag Manager + 8 more | Find emails |
| laboratoires-unisson.com | #514,675 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 9 more | Find emails |
| sysmex.ru | #514,943 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| itocr.com | #515,701 | All in One SEO, Apache, Let's Encrypt + 3 more | Find emails |
| parfumselect.nl | #515,864 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 10 more | Find emails |
| kidrock.com | #515,917 | Adobe Fonts (Typekit), Bootstrap, Cloudflare edge/CDN + 15 more | Find emails |
| grupofng.com | #516,093 | Apache, Font Awesome, Google Fonts + 4 more | Find emails |
| hificollective.co.uk | #516,123 | Amazon (ACM), Amazon Route 53, Apache + 6 more | Find emails |
| schoolwith.me | #516,454 | A8.net, Adobe Fonts (Typekit), Amazon (ACM) + 17 more | Find emails |
| happytreefriends.com | #516,518 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| radioprogresso.com.br | #516,585 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| beautycalia.com | #516,659 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| webdirections.org | #516,712 | Adobe Fonts (Typekit), Bluesky, Cloudflare + 9 more | Find emails |
| mayaangelou.com | #516,981 | All in One SEO, Apache, Divi + 14 more | Find emails |
| diebytheblade.com | #517,084 | Cloudflare Turnstile, DoubleClick (Google Ads), Font Awesome + 12 more | Find emails |
| elyamaje.com | #517,397 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 21 more | Find emails |
| hololist.net | #517,414 | Cloudflare, Cloudflare Turnstile, Cloudflare Web Analytics + 7 more | Find emails |
| intoxianime.com | #517,417 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| esthermall.co.kr | #517,507 | Apache, CrazyEgg, Criteo + 10 more | Find emails |
| tracklink.ec | #517,590 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| maf.fr | #517,840 | DigiCert, Drupal, Google Maps + 4 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 →