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 |
|---|---|---|---|
| toboaenergy.com | #561,944 | Cloudflare, DigiCert, Divi + 12 more | Find emails |
| tisparkle.com | #562,183 | Apache, Bootstrap, Drupal + 9 more | Find emails |
| postel.go.id | #562,348 | Bootstrap, DigiCert, Font Awesome + 9 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| lochting.com |
| #562,395 |
| Apache, Backbone.js, Cookie-Script + 8 more |
| Find emails |
| echum.com | #562,505 | Google Fonts, Let's Encrypt, Nginx + 4 more | Find emails |
| justline.co.jp | #562,684 | All in One SEO, Apache, Cloudflare Turnstile + 12 more | Find emails |
| tenpointcrossbows.com | #562,763 | Bazaarvoice, Cloudflare, Cloudflare Bot Management + 24 more | Find emails |
| tecstaff.jp | #562,849 | AddToAny, Google Analytics, Google Tag Manager + 6 more | Find emails |
| cadence.com.br | #562,993 | Amazon CloudFront, Bootstrap, CSC (Digital Brand Services) + 13 more | Find emails |
| aleph-com.net | #563,306 | Elementor, Font Awesome, Let's Encrypt + 9 more | Find emails |
| ciriomuseum.com | #563,736 | Branch, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| formaremedicala.ro | #563,743 | Bootstrap, Google Tag Manager, Let's Encrypt + 12 more | Find emails |
| gvrest.ru | #563,786 | Apache, Cloudflare, Fancybox + 10 more | Find emails |
| swordis.com | #563,874 | Cloudflare, Cloudflare edge/CDN, Google Ads Conversion + 13 more | Find emails |
| redgearmusic.com | #564,006 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| solarenergy.org | #564,104 | Cloudflare, Cloudflare edge/CDN, Fancybox + 10 more | Find emails |
| kontakt.ge | #564,406 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 11 more | Find emails |
| agrolsklep.pl | #564,536 | Divi, Font Awesome, Google Ads Conversion + 11 more | Find emails |
| behomecasa.it | #564,554 | Backbone.js, Bootstrap, Feedaty + 16 more | Find emails |
| brickwerks.co.uk | #564,768 | Adobe Fonts (Typekit), Bootstrap, Cloudflare Bot Management + 12 more | Find emails |
| titicaca-online.jp | #564,947 | Amazon (ACM), Amazon Route 53, Google Hosted Libraries + 8 more | Find emails |
| nrcan-rncan.gc.ca | #565,195 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 8 more | Find emails |
| kyb-europe.com | #565,331 | Backbone.js, Font Awesome, Google Maps + 12 more | Find emails |
| marveloptics.com | #565,454 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 7 more | Find emails |
| theproaudiofiles.com | #565,533 | Adobe Fonts, Adobe Fonts (Typekit), Backbone.js + 15 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 →