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.
Other javascript library & framework
| # | 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 |
|---|---|---|---|
| mios.com | #24,822 | Bootstrap, Font Awesome, Google Analytics + 14 more | Find emails |
| ull.es | #24,850 | Backbone.js, Bootstrap, Font Awesome + 9 more | Find emails |
| roamroles.com | #25,236 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| dingdongtogel90.com |
| #26,048 |
| Branch, Cloudflare, Cloudflare Images + 10 more |
| Find emails |
| 0101.co.jp | #26,103 | Adobe Experience Cloud (Launch), Akamai Bot Manager, Akamai Edge DNS + 19 more | Find emails |
| catopesawat.com | #26,158 | Branch, Google Analytics, Google Maps + 8 more | Find emails |
| radiko.jp | #26,400 | Cloudflare, Cloudflare edge/CDN, Google Tag Manager + 6 more | Find emails |
| justtrack.io | #26,763 | Algolia, Amazon CloudFront, Amazon Route 53 + 17 more | Find emails |
| floridahealth.gov | #27,011 | Cloudflare Bot Management, Cloudflare edge/CDN, Google Tag Manager + 5 more | Find emails |
| com.de | #27,120 | Google Tag Manager, Let's Encrypt, Modernizr + 2 more | Find emails |
| belugacdn.com | #28,326 | AdRoll, AngularJS, Bootstrap + 25 more | Find emails |
| answersingenesis.org | #28,507 | Adobe Fonts (Typekit), Bootstrap, Bunny CDN + 20 more | Find emails |
| lionstudios.cc | #28,552 | Amazon Route 53, Backbone.js, Cloudflare Bot Management + 9 more | Find emails |
| worldtimebuddy.com | #28,567 | Backbone.js, Cloudflare, Cloudflare Web Analytics + 5 more | Find emails |
| annunciogratis.net | #28,742 | AddToAny, Feedburner, Font Awesome + 11 more | Find emails |
| thetab.com | #29,125 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| yonhapnews.co.kr | #29,157 | Citrix NetScaler, DigiCert, Google AdSense + 4 more | Find emails |
| txdot.gov | #29,653 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Adobe Fonts (Typekit) + 9 more | Find emails |
| addons.business | #30,325 | Font Awesome, Let's Encrypt, WordPress + 3 more | Find emails |
| bcz.com | #30,345 | Backbone.js, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| gov.hk | #30,447 | Google Analytics, Google Tag Manager, Matomo + 2 more | Find emails |
| dikidi.ru | #30,757 | Bootstrap, Fancybox, Google Analytics + 8 more | Find emails |
| wordnik.com | #31,271 | Amazon (ACM), Amazon Route 53, Bootstrap + 9 more | Find emails |
| ytv.co.jp | #31,440 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 11 more | Find emails |
| chaosdorf.de | #31,658 | Bluesky, Let's Encrypt, Nginx + 2 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 →