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 |
|---|---|---|---|
| madgetech.com | #626,721 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 15 more | Find emails |
| fussl.at | #627,240 | Apache, Brevo, Google Ads Conversion + 14 more | Find emails |
| fortluft.com | #627,371 | Bootstrap, ChatGPT Ads Pixel, Fancybox + 13 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| rt2.com |
| #627,483 |
| Cloudflare, Cloudflare edge/CDN, Elementor + 8 more |
| Find emails |
| mediaengagement.org | #627,550 | Backbone.js, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| riffx.fr | #627,834 | Axeptio, Fancybox, Google Maps + 11 more | Find emails |
| megabites.com.ph | #627,850 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| heartmybackpack.com | #628,069 | Clicky, Consentmanager.net, DoubleClick (Google Ads) + 18 more | Find emails |
| geosetter.de | #628,189 | CookieYes, Google AdSense, Gravatar + 5 more | Find emails |
| lafougere.ch | #628,440 | Google Fonts, Let's Encrypt, Nginx + 2 more | Find emails |
| itzone77.ru | #628,524 | Let's Encrypt, Nginx, PHP + 3 more | Find emails |
| j-times.jp | #628,545 | All in One SEO, Axios, Google Hosted Libraries + 10 more | Find emails |
| chiesadinapoli.it | #628,550 | AddToAny, Font Awesome, Foundation + 8 more | Find emails |
| shvfg.de | #628,694 | Apache, Font Awesome, PHP + 5 more | Find emails |
| kabeltex.nl | #628,712 | Backbone.js, Font Awesome, Let's Encrypt + 5 more | Find emails |
| thecryptoupdates.com | #629,005 | Apache, Backbone.js, Cloudflare + 7 more | Find emails |
| buysolar.pk | #629,105 | Endurance International Group, Google Analytics, Google Tag Manager + 5 more | Find emails |
| zindee.com | #629,330 | Google Trust Services, Gravatar, Klaviyo + 5 more | Find emails |
| suhacorporation.com | #629,514 | Bootstrap, Font Awesome, Google Fonts + 9 more | Find emails |
| palagama.com | #629,517 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| dancewave.online | #629,670 | AOS, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| relrules.com | #629,813 | Amazon Advertising, Cloudflare, Cloudflare Web Analytics + 8 more | Find emails |
| litobox.com | #629,870 | Bootstrap, Let's Encrypt, Nginx + 3 more | Find emails |
| oddworld.com | #629,905 | Fancybox, Google Analytics, Google Fonts + 14 more | Find emails |
| foodchainid.com | #630,164 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 16 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 →