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 |
|---|---|---|---|
| katzkin.com | #244,720 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| rail-sim.de | #244,806 | Elementor, Google Fonts, Let's Encrypt + 7 more | Find emails |
| ciberloja.com | #245,360 | ASP.NET, WordPress, jQuery | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| rosenfeldmedia.com |
| #245,471 |
| Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 15 more |
| Find emails |
| bacardilimited.com | #245,522 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| wp-dreams.com | #245,575 | Cloudflare, Cloudflare Bot Management, Cloudflare Turnstile + 13 more | Find emails |
| silkthemes.com | #245,761 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 13 more | Find emails |
| sps.nhs.uk | #245,875 | Civic Cookie Control, Font Awesome, Let's Encrypt + 6 more | Find emails |
| chargebacks911.com | #246,451 | Amazon Route 53, Bootstrap, DataTables + 23 more | Find emails |
| opendevelopmentcambodia.net | #246,510 | All in One SEO, Font Awesome, Google Analytics + 10 more | Find emails |
| mar-car.com | #246,584 | Bootstrap, Font Awesome, Google Analytics + 7 more | Find emails |
| hawaiilife.com | #246,808 | Backbone.js, Cloudflare, DataTables + 14 more | Find emails |
| aiimpacts.org | #246,825 | Cloudflare edge/CDN, Font Awesome, Google Analytics + 14 more | Find emails |
| unilorin.edu.ng | #246,940 | Amazon Route 53, Font Awesome, Google Fonts + 8 more | Find emails |
| photoshopessentials.com | #247,126 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 10 more | Find emails |
| meowapps.com | #247,224 | Apple Pay, Cloudflare, Cloudflare Bot Management + 12 more | Find emails |
| literaryreview.co.uk | #247,375 | Awin, Google Analytics, Google Tag Manager + 10 more | Find emails |
| newmatilda.com | #247,975 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| cba.com.au | #248,161 | Adobe Audience Manager, Adobe Experience Manager Edge Delivery (Helix RUM), Amazon Route 53 + 9 more | Find emails |
| cimi.org.br | #248,247 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 17 more | Find emails |
| taxpayer.net | #248,410 | Adobe Fonts (Typekit), Cloudflare, Foundation + 8 more | Find emails |
| hydrogencouncil.com | #248,453 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 13 more | Find emails |
| ohmsha.co.jp | #248,560 | ASP.NET, Apache, Bootstrap + 4 more | Find emails |
| artonezero.com | #249,632 | Adobe Fonts (Typekit), Apache, Backbone.js + 13 more | Find emails |
| japandict.com | #249,823 | Bluesky, Bootstrap, Cloudflare + 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 →