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 |
|---|---|---|---|
| constitutionnet.org | #200,900 | Amazon (ACM), Amazon CloudFront, Apache + 10 more | Find emails |
| toto12line.net | #200,944 | Branch, Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| guardz.com | #201,206 | Cloudflare, Cloudflare edge/CDN, Convert + 7 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| pht.space | #201,437 | Django, Let's Encrypt, Nginx + 3 more | Find emails |
| madjacksports.com | #201,479 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| toplocalsingles.com | #201,685 | Backbone.js, Cloudflare, Cloudflare edge/CDN + 5 more | Find emails |
| qnl.qa | #201,874 | Bootstrap, Cloudflare, Cloudflare Bot Management + 10 more | Find emails |
| dvflora.com | #201,908 | Cloudflare, Fastly, Font Awesome + 11 more | Find emails |
| standz.in | #201,911 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| ladasten.com | #201,926 | Elementor, Google Fonts, Let's Encrypt + 8 more | Find emails |
| gabbia.com | #202,400 | Cloudflare, Font Awesome, Google Analytics + 10 more | Find emails |
| bisonapp.com | #202,572 | Backbone.js, Cloudflare, Cloudflare Bot Management + 8 more | Find emails |
| baptiststandard.com | #202,639 | AddToAny, Cloudflare, Cloudflare Bot Management + 20 more | Find emails |
| france-mineraux.fr | #202,860 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 9 more | Find emails |
| aviempnet.com | #203,071 | Branch, Cloudflare, Cloudflare edge/CDN + 6 more | Find emails |
| drivniv.com | #203,226 | Bootstrap, Cloudflare, Cloudflare Web Analytics + 11 more | Find emails |
| mlivevip.com | #203,231 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more | Find emails |
| wbaboxing.com | #203,545 | Apache, Bootstrap, Font Awesome + 11 more | Find emails |
| ugc.be | #203,633 | Bootstrap, Font Awesome, Friendly Captcha + 9 more | Find emails |
| cairoeditore.it | #203,722 | Adobe Fonts (Typekit), Drupal, Google Analytics + 8 more | Find emails |
| szhome.com | #203,738 | ASP.NET, Baidu Analytics, jQuery | Find emails |
| fun4friends.com | #203,819 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| virtualo.pl | #203,960 | Backbone.js, Cloudflare, Cloudflare Bot Management + 13 more | Find emails |
| gratis-sexnoveller.dk | #204,013 | Backbone.js, Font Awesome, Google Analytics + 6 more | Find emails |
| suzukiautos.com.co | #204,030 | AOS, Amazon CloudFront, Bootstrap + 12 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 →