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Technology · Analytics

VWO

vwo.com
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VWO is an experimentation platform for websites and apps. It now sits inside Wingify, the combined business of VWO and AB Tasty.[1][2]

An all-in-one conversion rate optimization platform. VWO combines A/B testing, multivariate testing, heatmaps, and personalization tools to help businesses improve website performance, user engagement, and conversions through data-driven insights and experimentation.

VWO belongs toA/B TestingAnalyticscategories.

What it is

Website experimentation for non-technical teams[1]

Also covers

Heatmaps, session recordings, funnels and surveys[1]

Free trial

30 days, no credit card[1]

Now part of

Wingify, with AB Tasty[2]

64websites

use it — 2.5% of the 2,555 websites we scanned in the last 12 months

#15of 152

tools in its category seen in our scans (we recognize 482)

26public pages

on UptimeCard — open any of them to see how that site is doing

In short: an experimentation suite that marketers can run without developers for most web tests; note that vwo.com now presents the product as part of Wingify.[1][2]

4.27% of all websites we track run VWO▼ 0.02 points since 20 Sep

Should you use VWO?

The 10-second version, from the vendor’s own pages and what we see in our scans

VWO fits if…

  • Marketing and product teams that run web tests without developer help[1]
  • You want testing, heatmaps and recordings in one suite[1]

Look elsewhere if…

  • You want a broad AI platform for marketing beyond testing[3]Optimizely describes itself this way.
  • You want a dedicated A/B testing tool with its own free trial[4]Convert's page leads with A/B testing.
Feature management and server-side tests need developers to integrate an SDK once[1]
The vendor is now Wingify, so account and legal pages may use that name[5]

VWO next to other testing tools

Statements come from each vendor's own page; website counts and speed are ours.

VWOOptimizelyConvert
What each one is
What it isExperimentation suitefor non-technical teams[1]AI platform for marketingwith testing among its tools[3]A/B testing toolwith a free trial[4]
Free trial30 daysno credit card[1]Not stated on its home page15 daysno credit card needed[4]
What we see in our scans
Websites running it642.5% of 2,555 scanned sites702.7% of 2,555 scanned sites120.5% of 2,555 scanned sites
Typical page load time4.3 s✓23 public sites5.9 s24 public sites4.7 s5 public sites
Typical page weight3.4 MBtypical home page3.8 MBtypical home page3.2 MB✓typical home page

Scan rows count public pages only; a tool needs at least 5 measured sites to appear.

  • Optimizely: An AI platform for marketing that also covers experimentation[3]
  • Convert: An A/B testing tool with a free trial[4]

Choose VWO if…

  • You want testing, analytics and personalization in one suite[1]

Choose Optimizely if…

  • You want an AI platform for marketing teams[3]

Choose Convert if…

  • You want a focused A/B testing tool[4]

Products

The product areas of the Wingify platform, in its own words

Experimentation

This page

Website experimentation built for non-technical teams[1]

Personalization

Real-time adaptive personalization[1]

Analyze

Heatmaps, session recordings, funnels and surveys[1]

Feature Management

Feature flagging, rollouts and server-side experimentation[1]

Commerce

Semantic search, product and content recommendations, and merchandising[1]

Engage

Behavior-triggered browser push notifications[1]

Support and help for VWO

How the vendor says you can reach it, and the public help community

Onboarding

Onboarding support and product training are included with the trial[1]

Guided demo

A demo with guided setup is available[1]

How VWO sites protect themselves

Share of the 64 sites we scanned that run each protection

HSTS73% · 47 sites

HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS

reCAPTCHA28% · 18 sites

reCAPTCHA is a free service from Google that helps protect websites from spam and abuse

Protections add up, they do not replace each other: a site can run all of them.

What sites use VWO for

An estimate from UptimeCard's technology map of 22 public sites

Runs the marketing site12 sites

accredible.com · ansarada.com · clicksign.com

Runs the whole site10 sites

blackboard.com · cleeng.com · hevodata.com

Rough guide, not a measurement: each description is written automatically from the site’s technology stack and the site has not confirmed it. A site is counted once, in the first group its description fits (shop, help and docs, blog, marketing site; otherwise the whole site). Descriptions that only guess (“likely”, “may”) are left out.

At a glance

UptimeCard's own scans and tests of 2,555 websites · refreshed weekly

How VWO sites scoreout of 100 · hover or tap a score for details

50PerformanceLowaverage site: 5088AccessibilityGoodaverage site: 8996Best practicesGoodaverage site: 9392SEOGoodaverage site: 92

Page load time

Loads about as fast as the average site

VWO sites
4.3 s
All sites
4.3 s

Most VWO sites load in 3.3–6.8 s. Home page weight: 3.4 MB vs 3.3 MB for all sites. 23 public sites measured.

Where are they hosted?

Mostly Amazon Web Services and Cloudflare

  • Amazon Web Services46%
  • Cloudflare23%
  • Incapsula8%
  • Fastly4%
  • Other19%
United States 54%Canada 27%Germany 4%

Who uses it?

Technology and Software is the biggest group

Technology and Software73%
Educational Resources8%
Software as a Service (SaaS)8%
Business Services4%

Share of 26 classified public sites. “× average” compares with all 961 public sites.

How VWO sites are built

Closest partners. The number says how many times more often the tool runs on VWO sites than on an average website. Hover a partner for its share of sites.

Microsoft Advertising4×GSAP3×Reddit Ads3×Microsoft Clarity3×Sentry3×HubSpot Analytics3×HubSpot3×Facebook Pixel3×Piwik PRO Core2×

Stacks we see most. Tools that tend to run together with VWO on the same websites. The percentage is the share of all 64 VWO sites that run the whole stack.

11 stacks · swipe, drag or use the arrows
#1

VWO + Google Analytics + Facebook Pixel + Microsoft Advertising + Linkedin Insight Tag

23.4%15 of 64 sites
#2

VWO + Google Tag Manager + Facebook Pixel + Microsoft Advertising + Microsoft Clarity

20.3%13 of 64 sites
#3

VWO + Google Analytics + Facebook Pixel + Microsoft Clarity + Reddit Ads

15.6%10 of 64 sites
#4

VWO + Google Tag Manager + Linkedin Insight Tag + Microsoft Clarity + HubSpot

14.1%9 of 64 sites
#5

VWO + Google Tag Manager + Facebook Pixel + Linkedin Insight Tag + jsDelivr

14.1%9 of 64 sites
#6

VWO + Google Tag Manager + Microsoft Advertising + Linkedin Insight Tag + Reddit Ads

14.1%9 of 64 sites
#7

VWO + Google Analytics + Microsoft Advertising + Microsoft Clarity + jsDelivr

12.5%8 of 64 sites
#8

VWO + Google Analytics + HubSpot + DoubleClick Floodlight + Piwik PRO Core

10.9%7 of 64 sites
#9

VWO + HubSpot Analytics + DoubleClick Floodlight + Piwik PRO Core + Tailwind CSS

6.3%4 of 64 sites
#10

VWO + WordPress + OneTrust

6.3%4 of 64 sites
#11

VWO + WordPress + Tailwind CSS

6.3%4 of 64 sites

Usually installed alongside

The bigger the bubble, the more of the 64 VWO sites also run the tool. Colour shows what the tool does. Hover or tap a bubble for details.

Google Tag Manager84%Google Analytics77%Facebook Pixel47%Linkedin Insight Tag41%Microsoft Advertising47%Reddit Ads19%DoubleClick Floodlight17%OneTrust28%HubSpot28%Cart Functionality17%Yoast SEO17%
Tag managerAnalyticsAdvertisingCookie consentMarketingOnline storeSearch visibility

Similar tools in its category

A/B Testing: 482 tools known, 152 seen in our scans

Google Analytics1,368 sitesAlternativeCloudflare Browser Insights218 sitesAlternativeDatadog87 sitesAlternativeAdobe Analytics73 sitesAlternativeOptimizely70 sitesAlternativeSite Kit66 sitesAlternativecomScore55 sitesAlternativeSnowplow Analytics42 sitesAlternativeFacebook Pixel468 sitesUsed togetherLinkedin Insight Tag435 sitesUsed togetherMicrosoft Clarity234 sitesUsed togetherPiwik PRO Core181 sitesUsed together

How websites combine VWO with other tools

Relationships found on the websites that use it, from the same map status pages show.

Integrates with another 15Complements another tool 12Needs another tool 1Overlaps with another 1

Websites using VWO

64 websites use VWO: 2.5% of the 2,555 websites we scanned in the last 12 months. A selection is shown below.

Scores are out of 100: P Performance · A Accessibility · B Best practices · S SEO. Green 80+, yellow 65–79, orange 50–64, red below 50. The dot shows whether our last scan found the site failing (red) or not (green); Red, amber or blue: an active incident on the site's status page (outage, degraded, maintenance) or a failing scan; amber also means a certificate ending within 30 days. Hover the dot for details.

Who is behind VWO

From its own pages and public records, with sources

Operated by

Wingify Software Pvt. Ltd.[5]

Office in Delhi, India · since 2009[5][6]

Chief Executive Officer

Sparsh G.[7]

Chief Revenue Officer

Alix S.[7]

Chief Product and Technology Officer

Ankit J.[7]

Its story

  1. 2010

    The product launched as Visual Website Optimizer, an A/B testing tool built around a Visual Editor. Teams could make page variations visually instead of in code.[6]

  2. 2017

    Between 2017 and 2020 the product grew from A/B testing into a wider experimentation platform. Heatmaps, session recordings, form analytics and surveys added user research to the tests.[6]

  3. 2026

    VWO and AB Tasty signed an agreement to combine in January 2026, backed by Everstone Capital. The two experimentation vendors planned to serve customers as one business.[8][9]

  4. 2026

    In September the combined business unveiled Wingify as its unified brand and one platform. VWO now presents experimentation, personalization, analytics and feature management as Wingify products.[2][9]

Questions about VWO

What is VWO?
An experimentation suite for websites and apps. It is now presented under the Wingify name, the combined business of VWO and AB Tasty.[1][2]
Do I need developers to use it?
Not for most web experimentation and personalization. Server-side experiments and feature management use SDKs that developers integrate once.[1]
Is there a free trial?
Yes. You can start on a 30-day free trial with no credit card.[1]
How do I install it?
Install the SmartCode snippet on your site. Website experimentation and personalization can go live the same day.[1]
How many websites use VWO?
We found VWO on 64 of the 2,555 websites we scanned in the last 12 months (2.5%). 26 of them have a public status page.
What is VWO often used with?
Among the websites we scan, VWO is often found alongside Google Tag Manager (84.4% of its sites), Google Analytics (76.6% of its sites), PHP (62.5% of its sites).
What are the alternatives to VWO?
Other a/b testing tools we recognize include Google Analytics, Facebook Pixel, Linkedin Insight Tag, Microsoft Clarity.

Is your website built with VWO?

UptimeCard checks it around the clock, tells you the minute it stops answering, and gives your visitors a status page.

Monitor my site freeCreate a status page