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.
Other javascript library & framework
| # | 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 |
|---|---|---|---|
| beuronline.com | #307,981 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 15 more | Find emails |
| umojastandard.com | #308,582 | Backbone.js, Bootstrap, Cloudflare + 10 more | Find emails |
| joiaslulean.com.br | #308,819 | Amazon CloudFront, Bootstrap, Font Awesome + 9 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| cityhouse.com.cn | #309,054 | DigiCert, Leaflet, OpenResty + 1 more | Find emails |
| silice.biz | #309,092 | Apache, Backbone.js, Bootstrap + 9 more | Find emails |
| jive.eu | #309,349 | Caddy, Drupal, Font Awesome + 4 more | Find emails |
| businessmarketingweb.com | #309,643 | Bootstrap, Font Awesome, Google Fonts + 8 more | Find emails |
| appleone.com | #309,703 | ASP.NET, Citrix NetScaler, Font Awesome + 18 more | Find emails |
| jl.org | #309,980 | Adobe Fonts (Typekit), Bootstrap, Cloudflare + 7 more | Find emails |
| redtrack.io | #310,214 | Adobe Fonts (Typekit), Ahrefs Analytics, Amazon Route 53 + 17 more | Find emails |
| rule34ai.art | #310,309 | All in One SEO, Cloudflare, Cloudflare Web Analytics + 10 more | Find emails |
| dartshopbullseye.nl | #310,454 | Font Awesome, Google Analytics, Google Fonts + 9 more | Find emails |
| gfds.de | #310,813 | Apache, Bootstrap, Font Awesome + 5 more | Find emails |
| mta.org | #311,188 | Akamai Bot Manager, Akamai Edge DNS, Akamai edge/CDN + 12 more | Find emails |
| sd.se | #311,451 | Akamai Edge DNS, Google Analytics, Google Tag Manager + 10 more | Find emails |
| reviewer4you.com | #311,457 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 11 more | Find emails |
| todayville.com | #311,461 | Cloudflare, Cloudflare edge/CDN, Google AdSense + 12 more | Find emails |
| habiteo.com | #311,704 | Amazon (ACM), Amazon Route 53, Apache + 11 more | Find emails |
| coastal-ims.com | #312,029 | Google Analytics, Google Fonts, Google Maps + 5 more | Find emails |
| ifi.ie | #312,030 | Bluesky, Bootstrap, Cloudflare + 17 more | Find emails |
| thefrankcosmo.com | #312,219 | Fancybox, Font Awesome, Google Fonts + 9 more | Find emails |
| uniprint.net | #312,260 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 14 more | Find emails |
| pontospravoar.com | #312,298 | Clicky, Cloudflare Bot Management, Cloudflare edge/CDN + 13 more | Find emails |
| intdash.com | #312,472 | Amazon (ACM), Amazon Route 53, Backbone.js + 15 more | Find emails |
| aohsz.com | #312,648 | Backbone.js, Google Analytics, Google Fonts + 13 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 →