Web frameworks
Who left ZK, and who still runs it
22 websites in the top 1M run ZK, observed directly from the rendered page in the July 2026 crawl.
6
stopped running it that month
0
of those are 11–500 employees
21
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running ZK
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Java 100%jQuery 95%Bootstrap 59%HSTS 41%Cloudflare 36%Google Font API 32%Font Awesome 32%Apache HTTP Server 27%Google Workspace 23%Microsoft 365 23%
Share of a 22-domain sample of ZK users that also run each.