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 |
|---|---|---|---|
| starafabryka.pl | #672,367 | Cloudflare, Google Fonts, Let's Encrypt + 9 more | Find emails |
| tallerdelpatinete.es | #672,375 | Apple Pay, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| ylikonet.gr | #672,431 | Google Analytics, Google Tag Manager, Nginx + 5 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| iblp.org | #672,606 | Cloudflare, Cloudflare edge/CDN, Divi + 10 more | Find emails |
| lowreyorgan.uk | #672,800 | All in One SEO, Apache, Endurance International Group + 5 more | Find emails |
| eastleakecreative.co.uk | #672,983 | Backbone.js, Font Awesome, Google Analytics + 13 more | Find emails |
| famallnetwork.su | #673,037 | All in One SEO, Google Fonts, Let's Encrypt + 4 more | Find emails |
| cabildodelapalma.es | #673,246 | AddToAny, Apache, Bootstrap + 11 more | Find emails |
| tigermus.ch | #673,414 | Let's Encrypt, Lottie, Nginx + 4 more | Find emails |
| thelightkart.com | #673,444 | Bootstrap, Cloudflare, Font Awesome + 14 more | Find emails |
| verdewatches.al | #673,555 | All in One SEO, Google Fonts, Google Tag Manager + 8 more | Find emails |
| op31.su | #673,804 | Font Awesome, Let's Encrypt, WordPress + 2 more | Find emails |
| publicnode.org | #673,977 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 5 more | Find emails |
| aqualivingstores.com | #674,032 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| clubcorvette.se | #674,113 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| eurvaper.com | #674,161 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| dme.studio | #674,613 | Backbone.js, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| ipatrimonio.org | #674,729 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| wscuc.org | #674,838 | Google Analytics, Google Hosted Libraries, Google Maps + 11 more | Find emails |
| labnovel.ru | #674,969 | Google Analytics, Google Tag Manager, Let's Encrypt + 6 more | Find emails |
| ebuysellrent.com | #675,005 | Bootstrap, Font Awesome, Google Fonts + 7 more | Find emails |
| ets-lindgren.com | #675,143 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| valeriodevelopments.ca | #675,412 | Cloudflare, Cloudflare edge/CDN, Drupal + 6 more | Find emails |
| vyoptalab.com | #675,566 | Branch, Google Maps, Hotwire Turbo + 7 more | Find emails |
| aim-progress.com | #675,676 | CookieYes, Google Analytics, Google Fonts + 10 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 →