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 |
|---|---|---|---|
| indoraya.news | #905,376 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| atena.pl | #905,450 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Amazon (ACM) + 4 more | Find emails |
| mcmillanusa.com | #905,627 | DataTables, Google Tag Manager, Klaviyo + 7 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| ecopolis-spb.ru | #905,699 | All in One SEO, Bootstrap, BotFAQtor + 14 more | Find emails |
| universidad.edu.co | #905,873 | All in One SEO, Backbone.js, Bootstrap + 8 more | Find emails |
| locarl.de | #905,889 | Apache, Font Awesome, Microsoft 365 + 4 more | Find emails |
| dgvs.de | #906,027 | Apache, ConsentMo, Google Analytics + 5 more | Find emails |
| wpdowns.com | #906,091 | Bootstrap, Cloudflare edge/CDN, Fancybox + 12 more | Find emails |
| fromdev.com | #906,126 | AOS, All in One SEO, Bootstrap + 13 more | Find emails |
| esemag.com | #906,767 | Amazon Route 53, Font Awesome, Google AdSense + 12 more | Find emails |
| abq.news | #906,985 | Broadstreet, Cloudflare, Cloudflare Bot Management + 18 more | Find emails |
| ergon.com | #907,103 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| gamelegends.it | #907,155 | Google Analytics, Google Fonts, Google Tag Manager + 6 more | Find emails |
| eto-ya.com | #907,309 | Google AdSense, Let's Encrypt, Nginx + 5 more | Find emails |
| rightcoachforme.com | #907,329 | Endurance International Group, Font Awesome, Foundation + 7 more | Find emails |
| ayudaexcel.com | #907,387 | Cloudflare, Elementor, Font Awesome + 9 more | Find emails |
| wn24.cz | #907,437 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 more | Find emails |
| loop-barcelona.com | #907,478 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| sabreteam.com | #907,626 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| davidglenhatch.com | #907,719 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| metlab.com.co | #907,940 | Cloudflare, Google Fonts, Let's Encrypt + 6 more | Find emails |
| collectionstrust.org.uk | #907,952 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| amazonconservation.org | #908,123 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Analytics + 13 more | Find emails |
| citejournal.org | #908,222 | Amazon Route 53, Backbone.js, Cloudflare Bot Management + 6 more | Find emails |
| friendlys.com | #908,429 | Backbone.js, Bootstrap, Cloudflare Bot Management + 13 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 →