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 |
|---|---|---|---|
| espacojuniorautismo.com.br | #779,662 | Amazon Route 53, Bootstrap, Font Awesome + 15 more | Find emails |
| essasofa.co.kr | #779,707 | Apache, Criteo, Daum + 14 more | Find emails |
| etcasiart.com | #779,842 | Font Awesome, Google Ads Conversion, Google Analytics + 11 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| eunitecidos.pt | #779,958 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| excel-practice-online.com | #780,263 | All in One SEO, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| exhilawriting.com | #780,310 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 10 more | Find emails |
| express.srv.br | #780,376 | Backbone.js, Cloudflare, Font Awesome + 10 more | Find emails |
| ezpeptides.com | #780,521 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| eztwins.co.kr | #780,533 | Apache, Backbone.js, Google AdSense + 8 more | Find emails |
| f-cs.jp | #780,555 | Amazon Route 53, Foundation, Laravel + 4 more | Find emails |
| facilcreditos.co | #780,750 | Cloudflare, Google Analytics, Google Fonts + 8 more | Find emails |
| factoria.ua | #780,764 | Font Awesome, Google Fonts, Google Tag Manager + 7 more | Find emails |
| familystreamplayer.com | #780,939 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| famososenbolas.com | #780,946 | Cloudflare, Cloudflare edge/CDN, Elementor + 8 more | Find emails |
| farma-city.al | #781,047 | Bootstrap, Cloudflare, Font Awesome + 10 more | Find emails |
| farmingsolutions.it | #781,116 | Apache, Font Awesome, Let's Encrypt + 5 more | Find emails |
| fashionguruonline.in | #781,138 | Bootstrap, Google Fonts, Hostinger + 7 more | Find emails |
| fcpatinatge.cat | #781,351 | Apache, Cloudflare, Google Site Kit + 3 more | Find emails |
| federicisofa.com | #781,398 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| fia80845.com | #781,679 | Branch, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| figar.ir | #781,763 | Google Analytics, Google Fonts, Google Tag Manager + 4 more | Find emails |
| film911.net | #781,820 | Apache, Matomo, PHP + 4 more | Find emails |
| filoumoris.com | #781,877 | Backbone.js, Font Awesome, Google Analytics + 11 more | Find emails |
| finebuy.co.in | #781,963 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 12 more | Find emails |
| firmaya.cl | #782,064 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 8 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 →