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 |
|---|---|---|---|
| bigbabusa.com | #175,880 | Apache, Font Awesome, Google Fonts + 2 more | Find emails |
| teleaudio.com.pl | #176,050 | Font Awesome, Google Analytics, Google Fonts + 10 more | Find emails |
| wwf.or.jp | #176,264 | Amazon Route 53, Apache, DigiCert + 9 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| rbbn.com | #176,411 | AOS, Azure DNS, Bootstrap + 21 more | Find emails |
| usnx.com | #176,506 | All in One SEO, Apache, Backbone.js + 5 more | Find emails |
| townsquaremedia.com | #176,771 | AOS, Express, Font Awesome + 14 more | Find emails |
| 50and3.com | #176,772 | Let's Encrypt, Nginx, WordPress + 1 more | Find emails |
| isi.ac.id | #177,067 | Backbone.js, Bootstrap, Google Analytics + 7 more | Find emails |
| snifffr.com | #177,090 | Backbone.js, Bootstrap, Cloudflare + 15 more | Find emails |
| bonpourtoi.ca | #177,491 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 12 more | Find emails |
| nrcan.gc.ca | #177,590 | Adobe Experience Cloud (Launch), Amazon (ACM), Amazon CloudFront + 7 more | Find emails |
| rhythmgamingworld.com | #177,711 | Font Awesome, Google Analytics, Google Fonts + 10 more | Find emails |
| ultimateslp.com | #178,583 | Cloudflare, Cloudflare Turnstile, Cloudflare edge/CDN + 15 more | Find emails |
| boichitro.in | #178,640 | Cloudflare, Cloudflare edge/CDN, Google Fonts + 8 more | Find emails |
| huntvisiongames.com | #178,705 | Alibaba Cloud OSS, Bootstrap, Cloudflare + 10 more | Find emails |
| root.sx | #178,880 | Google Fonts, Hostinger, Let's Encrypt + 4 more | Find emails |
| rndirectors.com | #179,006 | Apache, Font Awesome, Google Fonts + 9 more | Find emails |
| skillcrush.com | #179,569 | Cloudflare, Cloudflare Bot Management, Cloudflare edge/CDN + 15 more | Find emails |
| safetel.ru | #179,801 | Font Awesome, Google Fonts, Gravatar + 5 more | Find emails |
| freehentaipic.com | #179,811 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 7 more | Find emails |
| tarrantcountytx.gov | #179,998 | Adobe Experience Cloud (Launch), Apache, Microsoft 365 + 4 more | Find emails |
| toro.it | #180,057 | Click.io CMP, Cloudflare, Google Fonts + 12 more | Find emails |
| roi-nj.com | #181,069 | Backbone.js, Bootstrap, Broadstreet + 25 more | Find emails |
| heidigallery.com | #181,280 | Apache, Font Awesome, Google Analytics + 4 more | Find emails |
| wbxpress.com | #181,440 | Let's Encrypt, Nginx, Telegram + 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 →