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 |
|---|---|---|---|
| feuerwehr-florstadt.de | #326,778 | Apache, Fancybox, Font Awesome + 7 more | Find emails |
| lanouvelle.net | #326,957 | Backbone.js, Cloudflare, Didomi + 14 more | Find emails |
| newmandala.org | #327,019 | Adobe Fonts (Typekit), Cloudflare, Cloudflare edge/CDN + 9 more | Find emails |
| #1,036 (Tranco) |
| Find emails |
| 5 | alphonso.tv | #1,063 (Tranco) | Find emails |
| siazloom.in | #327,201 | Font Awesome, Google Fonts, Let's Encrypt + 5 more | Find emails |
| colorcodedlyrics.com | #327,204 | Cloudflare, Cloudflare Web Analytics, Cloudflare edge/CDN + 12 more | Find emails |
| fundaciondescubre.es | #327,268 | AddToAny, Apache, Bluesky + 10 more | Find emails |
| radioolsztyn.pl | #327,320 | AddToAny, Fancybox, Gemius + 13 more | Find emails |
| farmatotal.com.py | #327,534 | Bootstrap, Font Awesome, Google Analytics + 15 more | Find emails |
| inplayer.com | #327,844 | AOS, Algolia, Amazon (ACM) + 34 more | Find emails |
| pehlivanidis.gr | #327,910 | Bootstrap, Fancybox, Font Awesome + 8 more | Find emails |
| doujinblog.org | #328,001 | Ahrefs Analytics, Cloudflare, Cloudflare Web Analytics + 13 more | Find emails |
| healthcaresuppliesathome.com | #328,193 | Bootstrap, Font Awesome, Google Ads Conversion + 13 more | Find emails |
| shotscope.com | #328,473 | Brevo, Civic Cookie Control, Cloudflare Bot Management + 19 more | Find emails |
| hotelrakovec.cz | #328,552 | Apache, FreePrivacyPolicy, Google Tag Manager + 7 more | Find emails |
| thedarkroom.com | #328,858 | Bootstrap, Cloudflare, Cloudflare edge/CDN + 13 more | Find emails |
| propeller.la | #328,991 | Adobe Fonts (Typekit), Backbone.js, Bootstrap + 29 more | Find emails |
| otsi.sg | #329,134 | Bootstrap, Google Fonts, Let's Encrypt + 7 more | Find emails |
| cookson-clal.com | #329,606 | ASP.NET, Bootstrap, CookieFirst + 15 more | Find emails |
| campwise.com | #329,724 | Amazon Route 53, DigiCert, Google Analytics + 10 more | Find emails |
| convoy.com | #329,860 | Adobe Fonts (Typekit), Amazon CloudFront, Amazon Route 53 + 16 more | Find emails |
| univ-annaba.dz | #329,957 | Backbone.js, Font Awesome, Google Analytics + 8 more | Find emails |
| teleradtech.com | #330,064 | Backbone.js, Cloudflare Bot Management, Cloudflare edge/CDN + 13 more | Find emails |
| umt.ac.id | #330,107 | Apache, Bootstrap, Font Awesome + 7 more | Find emails |
| unknowncountry.com | #330,321 | Font Awesome, Google Analytics, Google Tag Manager + 8 more | Find emails |
| reachdata.live | #330,352 | Amazon (ACM), Amazon Route 53, Apache + 6 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 →