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 |
|---|---|---|---|
| youthtoday.org | #445,694 | AddToAny, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| unipile.com | #445,780 | Backbone.js, Crisp, Divi + 6 more | Find emails |
| autismeurope.org | #445,841 | Backbone.js, Bootstrap, Cloudflare + 13 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| fenacon.org.br | #445,859 | Fancybox, Google Analytics, Google Tag Manager + 7 more | Find emails |
| louisvillewater.com | #445,872 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Fonts + 9 more | Find emails |
| unitedpeople.global | #446,106 | All in One SEO, Font Awesome, Google Analytics + 8 more | Find emails |
| greatbeardesign.com | #446,248 | Apache, Font Awesome, Let's Encrypt + 4 more | Find emails |
| technodora.lk | #446,254 | Google Analytics, Google Fonts, Google Tag Manager + 10 more | Find emails |
| unitedtheme.com | #446,461 | Ahrefs Analytics, Cloudflare Turnstile, Google Analytics + 13 more | Find emails |
| myshowing.com | #446,488 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| astroleague.org | #446,603 | All in One SEO, Apache, Backbone.js + 7 more | Find emails |
| scorevision.com | #446,616 | Amazon Route 53, Bootstrap, Cloudflare edge/CDN + 24 more | Find emails |
| zwaremetalen.com | #446,852 | Google Analytics, Google Fonts, Let's Encrypt + 8 more | Find emails |
| traleetoday.ie | #446,877 | All in One SEO, CookieYes, Font Awesome + 9 more | Find emails |
| milrebajas.com.uy | #447,180 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 13 more | Find emails |
| azoo.hr | #447,317 | Apache, Backbone.js, Font Awesome + 7 more | Find emails |
| autosvs.com | #447,471 | Font Awesome, Google Analytics, Google Tag Manager + 9 more | Find emails |
| springscs.org | #447,507 | Adobe Fonts (Typekit), AppNexus, Backbone.js + 27 more | Find emails |
| exotic-africa.com | #447,645 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| aod.org | #447,657 | Algolia, Font Awesome, Google Analytics + 13 more | Find emails |
| alice-in-wonderland.net | #447,760 | Cloudflare edge/CDN, Font Awesome, Google Tag Manager + 9 more | Find emails |
| simucube.com | #448,052 | Apache, Google Fonts, Google Tag Manager + 14 more | Find emails |
| cinelinx.com | #448,060 | Cloudflare, Cloudflare edge/CDN, Google Analytics + 6 more | Find emails |
| ijppan.pl | #448,156 | AOS, Font Awesome, Google Analytics + 9 more | Find emails |
| fataverso.ro | #448,310 | Bootstrap, Font Awesome, Google Fonts + 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 →