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Websites using Optimizely

A/B Testing Personalisation Visit www.optimizely.com

Optimizely is an experimentation platform that helps developers build and run A/B tests on websites.

Lead List Exporter

25.5k live Optimizely sites, ready to export.

That's how many Optimizely websites are in VersionDB right now, each with its full tech stack, contact details, and social profiles.

Pick a ready-made template, or build your own filters in the Lead List Exporter and pay only for the rows you export.

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Just need a few domains? Export up to 10 free from a subset of our crawl.

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Optimizely companies in the United States

Every Optimizely website we detected in the United States.

Companies with personnel emails

Only sites where a personal, company-hosted email was found.

Decision makers on LinkedIn

Sites with at least one personnel LinkedIn profile.

Top 100,000 Optimizely sites by traffic

Start with the highest-traffic end of the dataset.

Sites on a .com domain

Limit results to Optimizely websites on .com domains.

Companies with phone numbers

Only sites where an organisation phone number was found.

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Live Websites

Websites Using Optimizely

A sample of live Optimizely sites from our latest crawl, with the other technologies each one runs.

Open in the Lead List Exporter
DomainAlso runsCrawl Date
getcamping.no
jQueryHSTSApache HTTP ServerBootstrapGoogle Analytics
September 27, 2026
diningcity.hu
Apache HTTP ServerreCAPTCHAModernizrUbuntuZURB Foundation
September 27, 2026
dabble.co
jQueryHSTSGoogle AnalyticsRubyRuby on Rails
September 27, 2026
fathermcgivney.org
jQueryHTTP/3HSTSCloudflareGoogle Tag Manager
September 27, 2026
therenditionproject.org.uk
jQueryPHPNginxGoogle Tag ManagerGoogle Hosted Libraries
September 27, 2026
secretentourage.com
jQueryPHPMySQLWordPressNginx
September 26, 2026
fintechtakes.com
jQueryPHPMySQLWordPressjQuery Migrate
September 26, 2026
sterlingimageworksgallery.com
HTTP/3HSTSCloudflareAppcues
September 26, 2026
myq-cloud.com
HTTP/3HSTSCloudflareCloudflare Browser InsightsCloudflare Bot Management
September 26, 2026
qeryz.com
jQueryPHPHTTP/3BootstrapCloudflare
September 26, 2026

How many websites use Optimizely?

We found Optimizely on 25,576 websites in our September 2026 crawl, across 108 countries.

Which countries use Optimizely the most?

By number of websites, the top countries are United States (51%, 13,106 sites), Australia (1%, 284 sites), Canada (1%, 276 sites), United Kingdom (1%, 258 sites) and Germany (under 1%, 147 sites). Together they account for 55% of the 25,576 Optimizely sites we track. 54% of the sites are in English, and .com is the most used domain ending, on 75% of them.

Where are Optimizely websites hosted?

The networks carrying the most Optimizely sites are RADWARE INC. (7,194 sites), Amazon.com, Inc. (6,109 sites) and Google LLC (3,754 sites).

What technologies are used with Optimizely?

Across the 25,576 Optimizely sites we track, the technologies most often found alongside it are Bootstrap (66%, 16,995 sites), Microsoft ASP.NET (52%, 13,241 sites), Cloudflare (40%, 10,343 sites), jQuery (36%, 9,291 sites) and Google Tag Manager (33%, 8,457 sites).

Deep Dive

Breakdown of Optimizely websites

What else they run, plus their language, hosting network, domain extension and country.

Same category

Other technologies in A/B Testing

A/B Testing technologies run on 1.52% of the websites we track. Optimizely ranks #3 of 41, on 3.3% of A/B Testing sites.

All A/B Testing technologies

FAQ

Answers drawn from our latest crawl of Optimizely websites. Anything else, email us and we will look it up.

Through our own crawl, which checks each site's HTML, scripts and headers rather than relying on self-reported data.