A/B Testing; Analytics
Who left UserZoom, and who still runs it
21 websites in the top 1M run UserZoom, observed directly from the rendered page in the July 2026 crawl.
2
stopped running it that month
1
of those are 11–500 employees
3
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running UserZoom
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
HSTS 81%core-js 81%Open Graph 76%Google Analytics 71%jQuery 62%Google Tag Manager 62%Amazon Web Services 57%Cloudflare 48%Java 48%Adobe Audience Manager 48%
Share of a 21-domain sample of UserZoom users that also run each.