A/B Testing & Personalization
1,843 of the 1,000,000 top sites in our Tranco top-1M census run Optimizely (0.2%). An experimentation platform for running A/B tests and personalizing website content. Detection is homepage-level HTML/header fingerprinting, so a site can run Optimizely on other pages without it showing here.
| # | Domain | Global traffic rank | Contacts |
|---|---|---|---|
| 1 | bit.ly | #102 (Tranco) | Find emails |
| 2 | bbc.com | #210 (Tranco) | Find emails |
| 3 | hp.com | #270 (Tranco) | Find emails |
| 4 | salesforce.com |
| Site | Tranco rank | Also detected | Contacts |
|---|---|---|---|
| gazelle.com | #117,684 | Adobe Fonts (Typekit), Amazon Route 53, Cloudflare edge/CDN + 10 more | Find emails |
| stargames.de | #117,985 | DigiCert, Google Tag Manager | Find emails |
| cloudvector.com | #118,083 | 6sense, Bizible, DigiCert + 9 more | Find emails |
| #274 (Tranco) |
| Find emails |
| 5 | gitlab.com | #393 (Tranco) | Find emails |
| o2.com |
| #118,611 |
| Azure Front Door, DigiCert, Google Tag Manager + 3 more |
| Find emails |
| furniturevillage.co.uk | #118,615 | Amplience, Bazaarvoice, Cloudflare edge/CDN + 10 more | Find emails |
| my-salesforce-hub.com | #118,776 | Adobe Audience Manager, Akamai Bot Manager, Akamai edge/CDN + 12 more | Find emails |
| whitecap.com | #118,801 | Azure API Management, Cloudflare, Cloudflare Bot Management + 6 more | Find emails |
| personalcapital.com | #118,831 | Amplitude, BugHerd, Cloudflare + 20 more | Find emails |
| barbie.com | #118,999 | Adobe Fonts (Typekit), Bazaarvoice, Cloudflare edge/CDN + 11 more | Find emails |
| corporatedomains.com | #119,271 | Azure Front Door, Bootstrap, Google Tag Manager + 5 more | Find emails |
| unicef.or.jp | #119,325 | Amazon CloudFront, Apache, Bootstrap + 9 more | Find emails |
| cashnetusa.com | #119,347 | Adobe Experience Cloud (Launch), Amazon (ACM), Datadog + 10 more | Find emails |
| home.sandvik | #119,468 | Azure API Management, Cloudflare edge/CDN, Google Trust Services + 2 more | Find emails |
| eil.com | #119,627 | ASP.NET, Amazon (ACM), Amazon Route 53 + 19 more | Find emails |
| gore.com | #119,933 | Adobe Experience Cloud (Launch), DigiCert, Drupal + 8 more | Find emails |
| senecapolytechnic.ca | #120,095 | Adobe Fonts (Typekit), DigiCert, Font Awesome + 7 more | Find emails |
| geers.de | #120,187 | Amazon Route 53, Azure API Management, Azure DNS + 11 more | Find emails |
| maybourne.com | #120,295 | AudioEye, Azure API Management, Azure Front Door + 5 more | Find emails |
| uagc.edu | #120,329 | Adobe Fonts, Adobe Fonts (Typekit), ClickTale (Contentsquare) + 14 more | Find emails |
| theworknumber.com | #120,598 | Akamai Edge DNS, Bootstrap, Google Fonts + 7 more | Find emails |
| windowsitpro.com | #120,965 | Chartbeat, Cloudflare, Cloudflare edge/CDN + 7 more | Find emails |
| fantasticfurniture.com.au | #120,997 | Cloudflare Bot Management, Cloudflare Web Analytics, Cloudflare edge/CDN + 1 more | Find emails |
| jansport.com | #121,065 | Akamai Edge DNS, Cloudflare edge/CDN, Google Fonts + 3 more | Find emails |
| zimmermann.com | #121,120 | Adobe Experience Manager Edge Delivery (Helix RUM), Cloudflare, CrazyEgg + 13 more | Find emails |
| ninjatransfers.com | #121,674 | Amazon Route 53, ChatGPT Ads Pixel, Cloudflare edge/CDN + 8 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 →