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 |
|---|---|---|---|
| globalrph.com | #171,527 | AppNexus, Cloudflare, Cloudflare edge/CDN + 16 more | Find emails |
| adendorff.co.za | #171,859 | Cloudflare, Cloudflare edge/CDN, Fancybox + 8 more | Find emails |
| buzzakoo.com | #171,942 | Backbone.js, Bootstrap, Google Fonts + 11 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| mma.gob.cl | #172,275 | AddToAny, Apache, Google Analytics + 9 more | Find emails |
| pickthebrain.com | #172,355 | Backbone.js, Feedburner, Font Awesome + 9 more | Find emails |
| checkout51.com | #172,388 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 13 more | Find emails |
| skepticalinquirer.org | #172,624 | Adobe Fonts (Typekit), Backbone.js, Bootstrap + 13 more | Find emails |
| kiyomizudera.or.jp | #173,034 | Google Tag Manager, Let's Encrypt, Nginx + 4 more | Find emails |
| metalzone.fr | #173,080 | Consent Framework, Google Analytics, Google Tag Manager + 4 more | Find emails |
| themeinprogress.com | #173,426 | Bootstrap, Font Awesome, Google Analytics + 11 more | Find emails |
| shepherd.edu | #173,653 | Google Analytics, Google Fonts, Google Hosted Libraries + 10 more | Find emails |
| guiafacillagos.com.br | #173,656 | Google AdSense, Google Analytics, Google Fonts + 12 more | Find emails |
| discoveryk12.com | #173,935 | Apache, Google Analytics, Google Fonts + 12 more | Find emails |
| outdoorindustry.org | #174,727 | Cloudflare Bot Management, Cloudflare edge/CDN, CookieYes + 14 more | Find emails |
| arkencounter.com | #174,914 | AOS, Bunny CDN, BunnyCDN + 16 more | Find emails |
| cptntrainer.com | #175,005 | Apache, Bootstrap, Fancybox + 12 more | Find emails |
| flight.com.gr | #175,210 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 15 more | Find emails |
| gewerbeverein.at | #175,379 | Apache, Backbone.js, Font Awesome + 9 more | Find emails |
| race.es | #175,391 | AddToAny, All in One SEO, Backbone.js + 13 more | Find emails |
| apurata.com | #175,455 | Amazon (ACM), Amazon CloudFront, Amazon Route 53 + 18 more | Find emails |
| nationalhomeless.org | #175,725 | AOS, AddToAny, All in One SEO + 21 more | Find emails |
| datafilehost.com | #175,729 | AOS, Bootstrap, Font Awesome + 7 more | Find emails |
| l-educdenormandie.fr | #175,812 | Google Analytics, Google Fonts, Google Tag Manager + 7 more | Find emails |
| tehkawat.com | #175,817 | Branch, Cloudflare, Cloudflare edge/CDN + 8 more | Find emails |
| divinetruthhub.com | #175,870 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 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 →