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 |
|---|---|---|---|
| tamsulosininfo.com | #71,067 | Branch, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| kodif.io | #71,371 | AOS, Amazon Route 53, Cloudflare Bot Management + 17 more | Find emails |
| irccloud.com | #71,807 | Bluesky, Cloudflare edge/CDN, Google Fonts + 3 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| zendalibros.com | #71,863 | AddThis, AddToAny, Fancybox + 12 more | Find emails |
| fanfiktion.de | #71,982 | Let's Encrypt, Nginx, Vimeo + 2 more | Find emails |
| lh360.com | #72,615 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 17 more | Find emails |
| migne.biz | #72,723 | Google Fonts, Let's Encrypt, LiteSpeed + 4 more | Find emails |
| questant.jp | #73,541 | Amazon Route 53, Apache, Backbone.js + 8 more | Find emails |
| cronachemaceratesi.it | #73,583 | Click.io CMP, Cloudflare, DoubleClick (Google Ads) + 13 more | Find emails |
| uscc.gov | #73,617 | Amazon Route 53, Apache, Bootstrap + 8 more | Find emails |
| iocdf.org | #73,767 | Adobe Fonts (Typekit), Cloudflare Bot Management, Cloudflare edge/CDN + 17 more | Find emails |
| protection-civile.org | #73,947 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| sdelayhod.ru | #74,266 | Let's Encrypt, Modernizr, Nginx + 3 more | Find emails |
| walkoffame.com | #74,365 | Cloudflare, Cloudflare edge/CDN, DataTables + 12 more | Find emails |
| pcplanetnow.com | #74,641 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| asianovel.net | #74,721 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| zexoads.com | #74,740 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 6 more | Find emails |
| whfoods.com | #74,819 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 10 more | Find emails |
| seegore.com | #75,036 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| orgasmatrix.com | #75,590 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| mysociety.org | #75,631 | Backbone.js, Bluesky, Google Analytics + 12 more | Find emails |
| ergo.com | #75,776 | Adobe Experience Cloud (Launch), Adobe Experience Manager Edge Delivery (Helix RUM), Amazon (ACM) + 11 more | Find emails |
| jmmb.com | #75,813 | AddThis, AddToAny, Bootstrap + 11 more | Find emails |
| seotalents.com | #75,849 | Bootstrap, Cloudflare edge/CDN, Fancybox + 12 more | Find emails |
| retailgazette.co.uk | #75,852 | Bootstrap, Cloudflare, Google Fonts + 9 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 →