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 |
|---|---|---|---|
| countynewscenter.com | #338,933 | Font Awesome, Google Analytics, Google Fonts + 8 more | Find emails |
| dmiexpo.com | #339,233 | AddToAny, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| coordinationsud.org | #339,453 | Adobe Fonts (Typekit), Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| 4ve.ru | #339,474 | Google Hosted Libraries, Let's Encrypt, OpenResty | Find emails |
| passpack.com | #339,626 | All in One SEO, Bootstrap, Cloudflare + 13 more | Find emails |
| racing4fun.de | #339,845 | AOS, Font Awesome, Google AdSense + 13 more | Find emails |
| cena-vykon.cz | #339,872 | Apache, Gravatar, Let's Encrypt + 5 more | Find emails |
| at-dns.com | #339,951 | Apache, Backbone.js, Font Awesome + 7 more | Find emails |
| cza.de | #340,479 | Apache, Foundation, Google Fonts + 5 more | Find emails |
| hanggliding.org | #340,693 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 5 more | Find emails |
| iptvsetupguide.com | #340,904 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| drogueriasanjorge.com | #340,947 | Google Fonts, Google Tag Manager, Google Trust Services + 8 more | Find emails |
| gerrysfishing.com | #340,953 | Chatra, Cloudflare, CookieYes + 11 more | Find emails |
| pintinc.jp | #340,964 | Amazon (ACM), Amazon Route 53, Bootstrap + 10 more | Find emails |
| americanfootballinternational.com | #341,015 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 13 more | Find emails |
| europawire.eu | #341,393 | AMP for WP, Apache, Cloudflare Turnstile + 6 more | Find emails |
| rsac.org | #341,759 | Branch, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| agentreputation.xyz | #341,927 | Google Analytics, Google Tag Manager, Let's Encrypt + 5 more | Find emails |
| miastodzieci.pl | #342,154 | Apache, Cloudflare, DoubleClick (Google Ads) + 11 more | Find emails |
| animenachrichten.de | #342,170 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 5 more | Find emails |
| vessel-hotel.jp | #342,388 | Apache, Fancybox, Font Awesome + 10 more | Find emails |
| ugfreak.info | #342,405 | Bootstrap, Google Fonts, Let's Encrypt + 7 more | Find emails |
| primetools.co.uk | #342,470 | Adobe Fonts (Typekit), Breeze, Cloudflare + 15 more | Find emails |
| anesidoralove.com | #342,787 | Cloudflare, Google Fonts, Let's Encrypt + 6 more | Find emails |
| manhaenterprisebd.com | #342,827 | Bootstrap, Font Awesome, Google Fonts + 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 →