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 |
|---|---|---|---|
| amsterdam-quality.fr | #759,057 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| anafre.pt | #759,115 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| animate-onlineshop.co.kr | #759,377 | Apache, Google Analytics, Google Tag Manager + 3 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| appletoto-pro.com | #759,993 | Cloudflare, Cloudflare edge/CDN, Google Maps + 6 more | Find emails |
| apxcloud.app | #760,113 | Font Awesome, Google Fonts, Gravatar + 8 more | Find emails |
| aquaticstoyourdoor.co.uk | #760,156 | Apache, Bootstrap, Google Analytics + 10 more | Find emails |
| arcurafansub.com | #760,302 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| arquati.it | #760,531 | All in One SEO, Backbone.js, Bootstrap + 12 more | Find emails |
| artsandcraftslahore.com | #760,635 | Apache, Google Fonts, Let's Encrypt + 6 more | Find emails |
| arynoir.com | #760,679 | Bootstrap, Font Awesome, Google Fonts + 14 more | Find emails |
| asmilan.org | #760,908 | AOS, CookieYes, DigitalOcean Spaces + 18 more | Find emails |
| auditorservice.com | #761,406 | AOS, Amazon Route 53, Bootstrap + 17 more | Find emails |
| aupairsa.co.za | #761,455 | ASP.NET, Backbone.js, DigiCert + 4 more | Find emails |
| aust.edu.pk | #761,495 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| auto-hub.co.za | #761,517 | AOS, Apache, Backbone.js + 7 more | Find emails |
| automatus.be | #761,633 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| autorro.sk | #761,678 | AWS Lambda, Bootstrap, Cloudflare edge/CDN + 18 more | Find emails |
| autoymotoferia.com.co | #761,715 | Apache, Font Awesome, Google Tag Manager + 8 more | Find emails |
| auvasa.es | #761,721 | Backbone.js, Bootstrap, Font Awesome + 14 more | Find emails |
| avantagepacs.com | #761,758 | ASP.NET, Font Awesome, Google Fonts + 7 more | Find emails |
| aworka.app | #761,950 | Let's Encrypt, Nginx, Ruby on Rails + 3 more | Find emails |
| axidwear.com | #761,978 | Font Awesome, GTranslate, Google Tag Manager + 12 more | Find emails |
| b4tlc.it | #762,220 | Apache, DigiCert, Foundation + 5 more | Find emails |
| baharicolor.com | #762,451 | Let's Encrypt, Swiper, WooCommerce + 2 more | Find emails |
| banglachotiaudio.in | #762,726 | All in One SEO, Backbone.js, Let's Encrypt + 5 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 →