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 |
|---|---|---|---|
| kabarbaik.co | #417,821 | Google Fonts, Gravatar, Let's Encrypt + 3 more | Find emails |
| xcandid.vip | #417,995 | Brevo, Cloudflare, Cloudflare Turnstile + 10 more | Find emails |
| allsafe.nl | #418,127 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 18 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| track-chinapost.com |
| #418,478 |
| Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 10 more |
| Find emails |
| plantly.io | #418,922 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| miyazaki-airport.co.jp | #418,999 | AddToAny, Cloudflare Turnstile, Font Awesome + 8 more | Find emails |
| frenchtoday.com | #419,188 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 4 more | Find emails |
| fragilepak.com | #419,570 | Bootstrap, Cloudflare, DataTables + 14 more | Find emails |
| aauw.net | #419,623 | Cloudflare, Cloudflare Bot Management, Cloudflare Web Analytics + 9 more | Find emails |
| dare.org | #419,796 | Cloudflare, Cloudflare edge/CDN, Divi + 9 more | Find emails |
| fanthatracks.com | #420,069 | Apache, Font Awesome, Google AdSense + 11 more | Find emails |
| hospitalaustral.edu.ar | #420,070 | Apache, Backbone.js, Bootstrap + 11 more | Find emails |
| stoys.co | #420,162 | Amazon Route 53, Apache, Google Fonts + 5 more | Find emails |
| exotickenya.com | #420,357 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 8 more | Find emails |
| asiapacificreport.nz | #420,412 | Google Analytics, Google Fonts, Let's Encrypt + 4 more | Find emails |
| cenfoss.co.mz | #420,443 | Apache, Bootstrap, DigiCert + 10 more | Find emails |
| okkjersey.com | #420,566 | Elementor, Flying Press, Gravatar + 7 more | Find emails |
| quwa.org | #420,839 | All in One SEO, Bluesky, ClickTale (Contentsquare) + 12 more | Find emails |
| womenslibrary.org.uk | #421,096 | AddToAny, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| makerslocal.org | #421,345 | Apache, Font Awesome, Google Fonts + 6 more | Find emails |
| nypti.org | #421,685 | Amazon (ACM), Amazon Route 53, Azure Front Door + 12 more | Find emails |
| virtualroad.org | #421,920 | Fancybox, Font Awesome, Google Fonts + 4 more | Find emails |
| vingt55.ca | #421,992 | Apache, Google Analytics, Google Fonts + 6 more | Find emails |
| amjadhardware.com | #422,520 | Bootstrap, Font Awesome, Gravatar + 7 more | Find emails |
| sloansecurityservice.com | #422,661 | Branch, Cloudflare, Cloudflare Web Analytics + 15 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 →