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 |
|---|---|---|---|
| vintageaviationnews.com | #142,697 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 11 more | Find emails |
| e-nexco.co.jp | #143,238 | Backbone.js, Google Fonts, Google Maps + 4 more | Find emails |
| criticalmention.com | #143,312 | Amazon Route 53, Cloudflare Bot Management, Cloudflare edge/CDN + 12 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| aaregistry.org | #143,998 | Apache, Bluesky, DigiCert + 13 more | Find emails |
| pauladeen.com | #144,449 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 17 more | Find emails |
| hirose.com | #145,121 | Bootstrap, Google Tag Manager, Sectigo + 2 more | Find emails |
| faso.la | #145,154 | Endurance International Group, Let's Encrypt, Nginx + 2 more | Find emails |
| blaupunkt.com | #145,264 | Cloudflare edge/CDN, Google Fonts, Google Tag Manager + 9 more | Find emails |
| bratabase.com | #145,291 | Backbone.js, Django, Feedburner + 10 more | Find emails |
| anduin.net | #145,385 | Apache, Let's Encrypt, PHP + 2 more | Find emails |
| hearthstone-decks.net | #145,633 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| press.org | #145,741 | AddThis, Bootstrap, Cloudflare edge/CDN + 12 more | Find emails |
| 3d-fernseher-kaufen.com | #146,179 | Apache, Backbone.js, Google AdSense + 8 more | Find emails |
| clarkesworldmagazine.com | #146,251 | AddToAny, Adobe Fonts (Typekit), Bluesky + 7 more | Find emails |
| investmentwatchblog.com | #146,615 | Bluesky, Cloudflare, Cloudflare Turnstile + 15 more | Find emails |
| schoo.jp | #146,984 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 21 more | Find emails |
| theduran.com | #147,113 | Cloudflare, Font Awesome, Google Fonts + 12 more | Find emails |
| bluerange.se | #147,329 | Font Awesome, Google Analytics, Google Fonts + 10 more | Find emails |
| dikidi.app | #147,468 | Bootstrap, Django, Fancybox + 13 more | Find emails |
| unimus.ac.id | #147,917 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 11 more | Find emails |
| kaltire.com | #147,971 | Cloudflare Bot Management, Cloudflare edge/CDN, Font Awesome + 11 more | Find emails |
| lukasiewicz.gov.pl | #148,159 | Backbone.js, Font Awesome, Google Analytics + 4 more | Find emails |
| wpenjoy.com | #148,574 | Chart.js, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| witchculttranslation.com | #148,599 | All in One SEO, Apache, Blogger + 7 more | Find emails |
| madamasr.com | #148,902 | All in One SEO, Bootstrap, Cloudflare + 10 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 →