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 |
|---|---|---|---|
| powerofvitality.com | #119,629 | Apache, DigiCert, Dynatrace + 6 more | Find emails |
| mojtrg.rs | #119,688 | ASP.NET, Bootstrap, Cloudflare + 11 more | Find emails |
| shirky.com | #119,747 | All in One SEO, Apache, Font Awesome + 3 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| oxygenbuilder.com |
| #119,811 |
| Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 14 more |
| Find emails |
| solaseedair.jp | #119,935 | Google Fonts, Google Tag Manager, Nginx + 2 more | Find emails |
| allegromicro.com | #120,526 | ASP.NET, Adobe Fonts (Typekit), Azure API Management + 13 more | Find emails |
| 2heng.xin | #120,998 | Cloudflare edge/CDN, Fancybox, Google AdSense + 10 more | Find emails |
| pitcherlist.com | #121,022 | Algolia, Bluesky, Cloudflare + 13 more | Find emails |
| dts.net.nz | #121,175 | Apache, Google Analytics, Modernizr + 5 more | Find emails |
| lptracker.ru | #121,215 | AOS, Bootstrap, Cloudflare + 12 more | Find emails |
| leaselink.pl | #121,376 | AngularJS, Apache, Azure DNS + 13 more | Find emails |
| cnbb.org.br | #121,514 | Cloudflare, Cloudflare edge/CDN, Fancybox + 13 more | Find emails |
| epg.one | #121,612 | Cloudflare, Font Awesome, Google Analytics + 8 more | Find emails |
| luckygunner.com | #121,711 | Cloudflare, Cloudflare edge/CDN, Disqus + 15 more | Find emails |
| dailysceptic.org | #122,435 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 6 more | Find emails |
| positive.news | #122,689 | AddToAny, Adobe Fonts (Typekit), Cloudflare + 12 more | Find emails |
| zabec.net | #122,900 | Azure DNS, Font Awesome, Google Ads Conversion + 9 more | Find emails |
| prepr.io | #123,326 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| flo.com | #123,348 | Amazon Route 53, Azure Front Door, Backbone.js + 15 more | Find emails |
| nu.ac.th | #123,531 | Azure DNS, Backbone.js, Bootstrap + 11 more | Find emails |
| jornalopcao.com.br | #123,813 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 11 more | Find emails |
| breakdance.com | #123,832 | Cloudflare, Cloudflare edge/CDN, DoubleClick (Google Ads) + 14 more | Find emails |
| deskmodder.de | #124,304 | Apache, Bluesky, Cookie-Script + 11 more | Find emails |
| stevepavlina.com | #124,332 | Backbone.js, Bootstrap, Cloudflare + 9 more | Find emails |
| vist.is | #124,427 | Amazon Route 53, Backbone.js, FlagCDN + 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 →