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 |
|---|---|---|---|
| solarview.com.br | #131,519 | AddToAny, Cloudflare, Font Awesome + 10 more | Find emails |
| freading.com | #131,564 | Amazon (ACM), Amazon Route 53, Apache + 4 more | Find emails |
| michaelhyatt.com | #131,583 | Bootstrap, Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| werf.io | #131,837 | Bluesky, Bootstrap, Cloudflare Bot Management + 13 more | Find emails |
| acherryontop.com | #132,604 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| dyslexiaida.org | #132,642 | ASP.NET, Azure API Management, Cloudflare + 18 more | Find emails |
| southwayy.com | #132,801 | Adopt, Backbone.js, Cloudflare + 16 more | Find emails |
| jnetstation.com | #133,356 | All in One SEO, Apache, Chart.js + 5 more | Find emails |
| autismpartnershipfoundation.org | #133,362 | Amazon Route 53, Google AMP, Google AdSense + 13 more | Find emails |
| caribbean-airlines.com | #133,395 | AngularJS, Apache, Azure DNS + 12 more | Find emails |
| craigmurray.org.uk | #133,461 | Cloudflare, Cloudflare edge/CDN, Disqus + 11 more | Find emails |
| tbn.org | #133,533 | AOS, Bootstrap, Cloudflare + 17 more | Find emails |
| janelia.org | #134,480 | Bluesky, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| mudgee.host | #134,492 | Backbone.js, Font Awesome, Google Analytics + 8 more | Find emails |
| 11v11.com | #134,533 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 14 more | Find emails |
| clbthemes.com | #134,744 | AOS, Apache, DigitalOcean Spaces + 14 more | Find emails |
| ahja.ch | #134,794 | Apache, Fancybox, Google Fonts + 6 more | Find emails |
| drwindows.de | #135,118 | Bluesky, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| incyte.com | #135,387 | CSC (Digital Brand Services), Drupal, Font Awesome + 9 more | Find emails |
| names.co.uk | #135,671 | Amazon CloudFront, Apache, Atlassian Cloud + 10 more | Find emails |
| obayashi.co.jp | #135,875 | Apache, GSAP, Google Analytics + 7 more | Find emails |
| devozki.com | #136,196 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| anad.org | #136,338 | Font Awesome, Foundation, Google Analytics + 12 more | Find emails |
| tpc.com | #136,760 | Adobe Experience Cloud (Launch), All in One SEO, Bootstrap + 18 more | Find emails |
| x86.fr | #136,847 | Apache, Google Fonts, Let's Encrypt + 4 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 →