StackPulseBY PULSELABS

A/B Testing

Websites using VWO

StackPulse detects VWO on 1,528 websites — 1.33% of the 115,150 domains in the index — making it the #1 a/b testing technology we track. Updated October 27, 2026.

Websites detected

1,528

Share of index

1.33%

Rank in A/B Testing

#1 of 3

Indexed websites

115,150

Download all 1,528 VWO websites as CSV

Top websites using VWO

Ordered by traffic rank. Each profile shows the complete detected stack.

  1. forbes.com

    with Next.js, Fastly, Varnish

    4 tech
  2. cpanel.net

    with Google Tag Manager, WordPress, Cloudflare, jQuery

    5 tech
  3. ui.com

    with Mailchimp, Google Ads, Reddit Pixel, GA4

    7 tech
  4. plesk.com

    with Google Tag Manager, WordPress, Cloudflare, jQuery

    8 tech
  5. onelink.me

    with Google Tag Manager, WordPress, Cloudflare, OneTrust

    6 tech
  6. checkpoint.com

    with Google Tag Manager, Drift, WordPress, Amazon CloudFront

    8 tech
  7. branch.io

    with Google Tag Manager, WordPress, Cloudflare

    4 tech
  8. taboola.com

    with Google Tag Manager, WordPress, reCAPTCHA

    4 tech
  9. wpastra.com

    with Authorize.net, Braintree, Mollie, PayPal

    55 tech
  10. oreilly.com

    with Google Tag Manager, Akamai, Apache, OneTrust

    5 tech
  11. appsflyer.com

    with Google Tag Manager, WordPress, Cloudflare, OneTrust

    6 tech
  12. moodle.com

    with Google Tag Manager, WordPress, Cloudflare, OneTrust

    7 tech
  13. braze.com

    with Google Tag Manager, Sanity, Next.js, Cloudflare

    7 tech
  14. qualtrics.com

    with Google Tag Manager, Drupal, Akamai, Nginx

    7 tech
  15. proofpoint.com

    with Drupal

    2 tech
  16. uber.com

    with Reddit Pixel, Snap Pixel, Mixpanel, Tealium

    12 tech
  17. auvik.com

    with WordPress, Cloudflare, jQuery, Marketo

    5 tech
  18. foursquare.com

    with Segment, Google Tag Manager, WordPress, Fastly

    8 tech
  19. ad.nl

    with Google Ads, Contentful, Akamai

    4 tech
  20. se.com

    with Google Tag Manager, Akamai, Amazon CloudFront, OneTrust

    6 tech
  21. nu.nl

    with Google Tag Manager, Akamai, Express

    4 tech
  22. onlamp.com

    with Google Tag Manager, WordPress, Akamai, Apache

    5 tech
  23. rightmove.co.uk

    with Google Tag Manager, Fastly, OneTrust, Express

    5 tech
  24. hln.be

    with Google Ads, Contentful

    3 tech
  25. twilio.com

    with Segment, Adobe Experience Platform, Google Tag Manager, Amazon CloudFront

    7 tech
  26. sapo.pt

    with Google Tag Manager, WordPress, Google Fonts

    4 tech
  27. ora.com

    with Google Tag Manager, Akamai, Apache, OneTrust

    5 tech
  28. straitstimes.com

    with Amazon CloudFront

    2 tech
  29. moma.org

    with Adyen, Klaviyo, Google Tag Manager, Sanity

    8 tech
  30. elementor.com

    with PayPal, Stripe, Trustpilot, Bloomreach

    8 tech
  31. everydayhealth.com

    with Varnish, reCAPTCHA

    3 tech
  32. rapid7.com

    with Google Tag Manager, Next.js, Amazon CloudFront, Cloudflare

    5 tech
  33. yougov.com

    with Google Tag Manager, Trustpilot, Angular, OneTrust

    5 tech
  34. segment.com

    with Segment, Adobe Experience Platform, Google Tag Manager, Amazon CloudFront

    6 tech
  35. backlinko.com

    with Google Tag Manager, Next.js, Netlify

    4 tech
  36. segment.io

    with Segment, Adobe Experience Platform, Google Tag Manager, Amazon CloudFront

    6 tech
  37. haproxy.com

    with PayPal, Plausible, Google Tag Manager, Apache

    5 tech
  38. bain.com

    with Cloudflare, TrustArc

    3 tech
  39. alz.org

    with Google Tag Manager, OneTrust, Google Fonts, jQuery

    6 tech
  40. malwarebytes.com

    with Plausible, Google Tag Manager, WordPress, Nginx

    6 tech
  41. ubnt.com

    with Google Ads, Reddit Pixel, GA4, Amazon CloudFront

    6 tech
  42. wbs-law.de

    with Google Tag Manager, WordPress, Nginx, Usercentrics

    7 tech
  43. termly.io

    with Google Tag Manager, WordPress, Cloudflare, Impact

    6 tech
  44. acronis.com

    with Apple Pay, Matomo, WordPress, Cloudflare

    6 tech
  45. cpanel.com

    with Google Tag Manager, WordPress, Cloudflare, jQuery

    5 tech
  46. pearson.com

    with Google Ads, Google Tag Manager, Akamai, OneTrust

    7 tech
  47. sundaysky.com

    with Google Tag Manager, WordPress, Amazon CloudFront, Nginx

    8 tech
  48. trimble.com

    with Apple Pay, Contentful, Next.js, Netlify

    6 tech
  49. clarivate.com

    with Meta Pixel, Google Tag Manager, WordPress, Fastly

    10 tech
  50. informationweek.com

    with Google Tag Manager, Cloudflare, OneTrust, Google Fonts

    5 tech
  51. act.org

    with Google Ads, X Pixel, Matomo, Google Tag Manager

    10 tech
  52. sketchup.com

    with Apple Pay, Contentful, Next.js, Netlify

    6 tech
  53. credly.com

    with Google Tag Manager, Cloudflare, OneTrust, jQuery

    6 tech
  54. databricks.com

    with Google Tag Manager, Drupal, WordPress, Gatsby

    9 tech
  55. genially.com

    with Amazon CloudFront, OneTrust, Google Fonts

    4 tech
  56. unfpa.org

    with GA4, Google Tag Manager, Drupal, Fastly

    7 tech
  57. demandbase.com

    with Google Tag Manager, WordPress, Cloudflare

    4 tech
  58. egnyte.com

    with Google Tag Manager, Drupal, Akamai, Nginx

    7 tech
  59. cognitoforms.com

    with PayPal, Google Ads, Microsoft Advertising, GA4

    6 tech
  60. braze.eu

    with Google Tag Manager, Sanity, Next.js, Cloudflare

    7 tech

Frequently asked questions

How many websites use VWO?
StackPulse currently detects VWO on 1,528 websites, which is 1.33% of the 115,150 domains in the index. The count is refreshed as the crawler re-scans the web.
How do I check whether a website uses VWO?
Open the free StackPulse lookup, enter the domain and the a/b testing section will list VWO if its scripts, headers or markup are present. Developers can call GET /v1/lookup/:domain.
Can I download a list of websites that use VWO?
Yes. Lead Export filters the index by VWO (optionally combined with other technologies) and streams the matching domains as CSV, up to 50,000 rows per file.
What is VWO?
VWO is a a/b testing technology. It ranks #1 of 3 a/b testing technologies by number of websites in the StackPulse index.

Look up any domain by API

One call returns the ecommerce platform, payment gateways, marketing pixels and infrastructure. Results are cached for a week.

curl -H "x-api-key: YOUR_KEY" \
  https://stackpulseapi.com/v1/lookup/forbes.com
Read the API docs

Export lead lists as CSV

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