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 |
|---|---|---|---|
| ptu.ac.in | #555,849 | Apache, Bootstrap, Font Awesome + 9 more | Find emails |
| scientopia.org | #556,032 | Feedburner, Font Awesome, Google AdSense + 6 more | Find emails |
| curiosityhuman.com | #556,273 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 8 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| anual.sg | #556,321 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| sweetshoppedesigns.com | #556,372 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 7 more | Find emails |
| caa.co.za | #556,384 | Apache, Backbone.js, Font Awesome + 13 more | Find emails |
| sfltimes.com | #556,560 | Apache, Google Analytics, Google Fonts + 8 more | Find emails |
| truepundit.com | #556,783 | AddToAny, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| cahiers-pedagogiques.com | #556,849 | Bluesky, Google Analytics, Google Tag Manager + 5 more | Find emails |
| smartbuyersmart.com | #556,912 | Font Awesome, Google Fonts, Hostinger + 7 more | Find emails |
| pizzarellamisokimchi.com | #557,033 | Font Awesome, Google Fonts, Let's Encrypt + 5 more | Find emails |
| jees.or.jp | #557,087 | Backbone.js, Google Analytics, Google Fonts + 5 more | Find emails |
| iafas.gov.ar | #557,262 | Apache, Backbone.js, Bootstrap + 13 more | Find emails |
| shadersmods.com | #557,281 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 5 more | Find emails |
| zapachnisci.com.pl | #557,295 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| inasp.info | #557,780 | AddToAny, Bluesky, Cloudflare + 15 more | Find emails |
| proxies123.com | #557,887 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 10 more | Find emails |
| presspage.biz | #558,074 | Bootstrap, Google AdSense, Google Analytics + 11 more | Find emails |
| 2wheelerspares.com | #558,253 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 10 more | Find emails |
| ksplice.com | #558,289 | Akamai Edge DNS, Bootstrap, DigiCert + 1 more | Find emails |
| phccweb.org | #558,312 | AngularJS, Cloudflare, Cloudflare Bot Management + 19 more | Find emails |
| proinnshost.com | #558,476 | Bootstrap, Font Awesome, Google AdSense + 8 more | Find emails |
| discoverycube.org | #558,512 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| gna.es | #558,648 | AddToAny, Cloudflare, Google Analytics + 9 more | Find emails |
| thirdact.org | #558,702 | AOS, Bluesky, Bootstrap + 14 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 →