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 |
|---|---|---|---|
| iorane.com.br | #263,751 | Amazon CloudFront, Bootstrap, Font Awesome + 9 more | Find emails |
| xn--p1aee.xn--p1ai | #263,829 | AOS, Bitrix, Bootstrap + 10 more | Find emails |
| umed.pl | #263,866 | Apache, Bootstrap, Font Awesome + 10 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| workdesign.com |
| #264,221 |
| Backbone.js, Cloudflare, Cloudflare edge/CDN + 10 more |
| Find emails |
| ukuleleunderground.com | #264,338 | CleanTalk, Font Awesome, Google Fonts + 9 more | Find emails |
| f2ff.jp | #264,412 | All in One SEO, Google Fonts, Google Tag Manager + 4 more | Find emails |
| e-tsuyama.com | #264,479 | Apache, Google Analytics, Google Tag Manager + 4 more | Find emails |
| diversesolutions.com | #264,521 | All in One SEO, Cloudflare, Cloudflare Bot Management + 12 more | Find emails |
| nassp.org | #264,541 | Backbone.js, Bootstrap, Cloudflare + 20 more | Find emails |
| barnsley.gov.uk | #264,733 | ASP.NET, Azure API Management, Bootstrap + 11 more | Find emails |
| ubuntugeek.com | #264,759 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| grupojoly.com | #264,779 | Google Fonts, Google Maps, Let's Encrypt + 7 more | Find emails |
| kevlarhosting.biz | #264,898 | Apache, Font Awesome, Google Analytics + 6 more | Find emails |
| asetek.com | #264,906 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 14 more | Find emails |
| icetv.com.au | #265,032 | Amazon Route 53, Backbone.js, Bootstrap + 13 more | Find emails |
| fmarion.edu | #265,213 | Bootstrap, Fancybox, Fastly + 10 more | Find emails |
| mangoerp.com | #265,316 | Alibaba Cloud CDN, Alibaba Cloud DNS, AngularJS + 7 more | Find emails |
| financieeldossier.nl | #265,548 | Let's Encrypt, Lottie, Microsoft 365 + 3 more | Find emails |
| chs.org | #265,555 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 14 more | Find emails |
| adopte.app | #265,596 | DigiCert, Google Tag Manager, Google Workspace + 3 more | Find emails |
| hz-net.de | #265,639 | Consentmanager.net, Font Awesome, Google Fonts + 8 more | Find emails |
| trdizin.gov.tr | #265,985 | Apache, Font Awesome, Google Fonts + 9 more | Find emails |
| courthousedirect.com | #266,355 | ASP.NET, Amazon Route 53, Font Awesome + 10 more | Find emails |
| ploscompbiol.org | #266,542 | Apache, Bluesky, Cloudflare + 10 more | Find emails |
| woerterbuchnetz.de | #266,618 | Apache, Let's Encrypt, jQuery + 2 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 →