Technologies / A/B Testing / Analytics

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VWO

A/B TestingAnalytics vwo.com

VWO is an A/B testing and conversion optimisation platform made by Wingify. The suite adds heatmaps, session recordings, surveys, personalisation and feature rollouts, all from one script on the site.

Companies running VWO are mid-market to enterprise e-commerce retailers, SaaS vendors, publishers and lead-generation businesses, mainly in India, the United States and Europe. Pricing follows monthly visitors, so a VWO script that stays on a site points to meaningful traffic and a team whose job is to run experiments.

The 111,946 sites in this list are bought by CRO and UX agencies, analytics and personalisation vendors, user-research tools, development shops that build test variations, and competing experimentation platforms. A new VWO installation is a company that has just started or restarted a testing programme; a dropped one has paused optimisation or moved to a different tool, and in either case the owner of that budget is identifiable.

VWO is installed on 111,946 websites, which is 0.3% of all Analytics detections we record. Websites measured with VWO are most often served from United States (42,223), Germany (15,706) and Canada (3,714), and .com, .org and .net are the most common domain endings.

111,946
websites using it
+111,946
started in the last 30 days
−1,035
stopped in the last 30 days
November 2, 2026
statistics updated

Websites using VWO

Preview filters with coarse ranges. Exact ranks and registration dates are available in the dashboard when you download a list.

111,946 websites. Sign in to download the full list (free sample below, full lists from $69/mo)

23 days ago 456 websites used VWO; today it is 111,946 (+24449.6%).

Top countries for VWO

United States
42.2K
Germany
15.7K
Canada
3.7K
Netherlands
2.3K
Hungary
1.2K
United Kingdom
1K
Ireland
781
Singapore
443

Top TLDs

.com
64.7K
.org
7.1K
.net
6.7K
.fr
3.3K
.info
3.3K
.nl
2.3K
.uk
1.7K
.hu
1.2K

Sample of 15 websites using VWO

best-ranked first; the full list has 111,946
DomainCountryMajestic rankNetAPI rankContactsFirst seen
ad.nl DE 3,221 218 email phone 2026-10-29
hln.be DE 5,175 265 phone 2026-10-29
rightmove.co.uk US 5,998 270 2026-10-30
carsensor.net JP 22,921 373 2026-10-28
edmentum.com US 65,972 483 email phone 2026-10-26
cpanel.net - 89 878 phone 2026-10-29
plesk.com - 135 937 2026-10-25
taboola.com DE 5,305 1,225 2026-10-27
qualtrics.com DE 639 1,249 2026-10-26
oreilly.com DE 436 1,254 email phone 2026-10-28
proofpoint.com US 717 1,535 phone 2026-10-25
braze.com - 16,972 1,720 email 2026-10-29
rapid7.com US 5,335 1,902 phone 2026-10-25
branch.io US 37,837 1,915 2026-10-27
se.com DE 1,190 2,106 2026-10-25

Alternatives to VWO in Analytics

All Analytics technologies

Often used together with VWO

Questions about VWO websites

How many websites use VWO?

As of November 2, 2026, 111,946 websites load the VWO script on their homepage. The number is recalculated every night from our own crawl of the web.

Who buys lists of websites using VWO?

Vendors of analytics, A/B testing, consent and personalisation tools, agencies that sell conversion optimisation, and data products that plug into VWO. A website that measures itself has a team that looks at numbers; one that just added VWO is building that capability, one that dropped it has switched tools.

Where are VWO websites hosted?

United States leads with 42,223 websites, followed by Germany (15,706) and Canada (3,714). The country is where the website is served from; sites on a hosted platform show the platform's country.

How do I find websites that just added VWO?

The New tab on this page lists websites where our crawler saw VWO for the first time in the last days, newest first; the Dropped tab lists the sites that removed it. Both download with a subscription and refresh every morning.

How do I get a list of websites using VWO?

A free BetaScan account downloads a {sample_rows}-row sample. A subscription from $69 a month gives the full list of 111,946 domains, or a dataset with emails, phones, country, hosting and ranks, filtered by country, TLD, rank and registration date. See pricing.

How does BetaScan detect VWO?

Our crawler fetches the homepage of every domain we track and matches the page and its response headers against the signatures of 7,636 technologies. A website counts as using VWO when its latest crawl shows the signature; when the signature disappears, the site moves to the dropped list.

How can you tell a website uses VWO?

The page loads the SmartCode snippet from dev.visualwebsiteoptimizer.com with the account id as a parameter, defines a window._vwo_code object and sets cookies that begin with _vis_opt or _vwo. The snippet is placed in the head to avoid flicker, so it is visible on the homepage even when no test is currently running. Heatmap and recording features use the same script.

What does a new VWO site mean for a seller?

A business has decided to run experiments on its website, which means it has traffic worth optimising and a person or team accountable for conversion rates. Agencies that design and build test variations, analytics consultants, and vendors of complementary research tools use this moment because the company is actively looking for ideas and hands to execute them.

Is VWO used by large companies or small ones?

Mostly mid-sized and large websites. Testing only pays off with enough visitors to reach statistical significance, and VWO plans are priced by traffic, so very small sites rarely keep it. The list leans towards established online retailers, software vendors and media properties, including enterprise customers that chose VWO over more expensive experimentation suites.