Websites using Optimizely
Optimizely is experimentation and A/B testing. Of the 32,312 websites we've scanned, 176 use it. Here are the most popular, where they are, what they run alongside Optimizely.
Most popular websites using Optimizely
The top 25 by popularity (Tranco rank) of the 176 we know of.
| Site | Industry | Rank |
|---|---|---|
 Zoom Communications zoom.us | – | #74 |
 Bit bit.ly | – | #117 |
Zoom Communications zoom.com | Video conference | #835 |
 LG lg.com | – | #900 |
 Cleveland Clinic clevelandclinic.org | Hospitals and rehabilitation | #1,890 |
Arizona State University asu.edu | – | #2,125 |
 Asana asana.com | – | #2,233 |
 Zapier zapier.com | – | #2,894 |
 Freshdesk freshdesk.com | – | #3,042 |
 Fox Sports 1 foxsports.com | – | #4,231 |
 Marks & Spencer marksandspencer.com | Retail | #4,934 |
 American Medical Association ama-assn.org | – | #4,941 |
 Humble Bundle, Inc. humblebundle.com | Digital distribution | #8,044 |
 Uline uline.com | Wholesale | #9,226 |
Alaska Airlines alaskaair.com | – | #9,459 |
Optus optus.com.au | Telecommunications | #10,221 |
Kmart Australia kmart.com.au | Retail | #10,647 |
 Equifax equifax.com | – | #10,657 |
 Education Week edweek.org | – | #12,213 |
 American Eagle Outfitters ae.com | Retail | #13,450 |
 Rippling rippling.com | – | #14,375 |
 ShipStation shipstation.com | – | #14,397 |
Zenfolio zenfolio.com | – | #15,995 |
 Woot woot.com | Retail | #17,626 |
 O2 o2.co.uk | Telecommunications | #18,017 |
Get all 176 Optimizely sites
The full list as a sheet, filtered by industry, country, popularity or site speed, with company details, contacts and email formats. Credits included to start.
What Optimizely sites also use
- Google Tag Manager81%
- Cloudflare59%
- jQuery30%
- Tailwind CSS26%
- React23%
- Next.js18%
- WordPress15%
- Fastly13%
Top industries
- Retail19%
- Insurance8%
- Telecommunications6%
- Professional service4%
- Hospitals and rehabilitation4%
- Industrial manufacturing4%
Countries (by country domain)
- Australia10%
- United Kingdom4%
- Canada1%
- Norway1%
- Spain<1%
- Denmark<1%
Where this comes from
We detect technologies from each site's own pages (code, headers and scripts) when it's enriched, so this covers the sites we've scanned, not the whole web, and it grows every day. Popularity is the Tranco list of the top million sites; only sites in it are named here. Updated October 2026.
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