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 |
|---|---|---|---|
| bathandbodyworks.mx | #182,014 | Amazon CloudFront, Bootstrap, Cloudflare + 9 more | Find emails |
| lemire.me | #182,092 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 4 more | Find emails |
| perfectketo.com | #182,462 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| fordhamchurch.org.uk | #182,601 | Backbone.js, Google Analytics, Google Fonts + 10 more | Find emails |
| rawdex.net | #182,679 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 7 more | Find emails |
| finpension.ch | #182,964 | Cloudflare, Cloudflare edge/CDN, CookieYes + 13 more | Find emails |
| ets2mods.lt | #183,125 | Cloudflare, Cloudflare edge/CDN, Font Awesome + 9 more | Find emails |
| smartpelis.tv | #183,299 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| wetandpuffy.com | #183,452 | Bootstrap, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| colt.com | #183,478 | Bootstrap, Cloudflare Bot Management, Cloudflare edge/CDN + 7 more | Find emails |
| lethbridgeherald.com | #183,703 | Google Hosted Libraries, Google Tag Manager, Infolinks + 14 more | Find emails |
| hrreporter.com | #183,791 | ASP.NET, Algolia, Azure API Management + 16 more | Find emails |
| mybiat.tn | #184,134 | AddToAny, Apache, Bootstrap + 10 more | Find emails |
| xn--s3casagp8a7e7ag4h8d.com | #184,319 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 9 more | Find emails |
| dana84132.com | #184,478 | Branch, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| flightcircle.com | #184,547 | Amazon (ACM), Amazon Route 53, AngularJS + 19 more | Find emails |
| gdexpress.com | #184,566 | Cloudflare, Cloudflare edge/CDN, Drupal + 12 more | Find emails |
| ahoramardelplata.com.ar | #184,599 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 5 more | Find emails |
| lifewithallah.com | #184,918 | Brevo, Cloudflare, Cloudflare edge/CDN + 12 more | Find emails |
| rmets.org | #184,969 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| southglos.gov.uk | #185,118 | Azure Front Door, Backbone.js, Bootstrap + 17 more | Find emails |
| webrec.it | #185,135 | Apache, Bootstrap, Fancybox + 12 more | Find emails |
| airadvantage.net | #185,208 | Apache, Backbone.js, Font Awesome + 10 more | Find emails |
| firstwalk.com | #185,323 | All in One SEO, Apache, FullStory + 9 more | Find emails |
| zaclys.com | #185,666 | Apache, Divi, Font Awesome + 5 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 →