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.
Other javascript library & framework
| # | 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 |
|---|---|---|---|
| restlessdevelopment.org | #998,320 | Cookiebot, Foundation, Google Analytics + 11 more | Find emails |
| euphoriavogue.com | #998,508 | Font Awesome, Google Fonts, Hostinger + 7 more | Find emails |
| bioquell.com | #998,533 | Amazon Route 53, Apache, Backbone.js + 17 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| ustornadoes.com | #998,773 | AMP for WP, AddThis, Blogger + 11 more | Find emails |
| mexico-de-casino.com | #998,787 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| intelligentciso.com | #998,942 | 6sense, Bootstrap, Cloudflare + 8 more | Find emails |
| mandirstudio.com | #999,091 | Font Awesome, Google Fonts, Hostinger + 8 more | Find emails |
| birminghamskin.com | #999,226 | Font Awesome, Google Analytics, Google Fonts + 13 more | Find emails |
| isabellephilipp.dk | #999,423 | Adobe Fonts (Typekit), Font Awesome, Google Analytics + 11 more | Find emails |
| von.ca | #999,425 | AOS, Apache, Cloudflare + 9 more | Find emails |
| gemini.cz | #999,494 | All in One SEO, Bootstrap, Google Tag Manager + 9 more | Find emails |
| wida.us | #999,499 | AddToAny, Azure DNS, Bootstrap + 8 more | Find emails |
| mylifenews.net | #999,745 | AddThis, Font Awesome, Google AdSense + 12 more | Find emails |
| eandi.org | #999,933 | Apache, Azure Front Door, DigiCert + 11 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 →