A/B Testing; Analytics
Who left VWO, and who still runs it
5,584 websites in the top 1M run VWO, observed directly from the rendered page in the July 2026 crawl.
570
stopped running it that month
148
of those are 11–500 employees
2,168
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running VWO
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Google Analytics 91%Google Tag Manager 89%core-js 82%Open Graph 71%Cloudflare 68%jQuery 65%Priority Hints 63%HSTS 62%Facebook Pixel 57%Microsoft Advertising 47%
Share of a 3,000-domain sample of VWO users that also run each.