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 |
|---|---|---|---|
| geekzone.fr | #960,558 | Fastmail, Font Awesome, Let's Encrypt + 6 more | Find emails |
| heerenveen.nl | #960,568 | Gravatar, HTMX, Let's Encrypt + 4 more | Find emails |
| techfixated.com | #960,603 | Breeze, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| nokona.com | #960,778 | Attentive, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| kangkas.com | #960,821 | Ahrefs Analytics, Apache, Criteo + 12 more | Find emails |
| triviumchina.com | #961,089 | AddToAny, Bootstrap, Cloudflare + 8 more | Find emails |
| sistemype.com | #961,127 | Font Awesome, Google Fonts, Let's Encrypt + 7 more | Find emails |
| visayandailystar.com | #961,153 | Backbone.js, Google AdSense, Google Fonts + 6 more | Find emails |
| dnsrelay.net | #961,288 | Font Awesome, Google Fonts, Let's Encrypt + 5 more | Find emails |
| nbafanmarket.com | #961,461 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| redwheelweiser.com | #961,484 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| protectli.com | #961,538 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 6 more | Find emails |
| fleischbranche.de | #961,594 | Adform, Bootstrap, Branch + 16 more | Find emails |
| sundaraspa.com | #961,739 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 20 more | Find emails |
| onlinetoys.com.au | #961,929 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| openmediavault.io | #962,354 | All in One SEO, Bluesky, Cloudflare edge/CDN + 6 more | Find emails |
| robuustetafels.nl | #962,395 | BugHerd, ClickTale (Contentsquare), Cloudflare Turnstile + 13 more | Find emails |
| pokegalerie.com | #962,560 | Google Fonts, Hostinger, Let's Encrypt + 10 more | Find emails |
| mr-bike.jp | #962,565 | Bootstrap, Google AdSense, Google Analytics + 8 more | Find emails |
| blumen-schwarz.de | #962,727 | Apache, Fancybox, Font Awesome + 6 more | Find emails |
| gardenpartners.com | #962,741 | Apache, Google Analytics, Google Fonts + 4 more | Find emails |
| newspaperclub.com | #962,770 | Amazon (ACM), Amazon Route 53, Bootstrap + 16 more | Find emails |
| invo.ro | #963,171 | Backbone.js, Bootstrap, Font Awesome + 7 more | Find emails |
| byc-news.de | #963,181 | Apache, Google Analytics, Google Fonts + 5 more | Find emails |
| playmatestoys.com | #963,206 | Backbone.js, Cloudflare, Cloudflare Bot Management + 9 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 →