Operating systems
Who left CentOS, and who still runs it
3,158 websites in the top 1M run CentOS, observed directly from the rendered page in the July 2026 crawl.
1,281
stopped running it that month
55
of those are 11–500 employees
453
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running CentOS
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Apache HTTP Server 94%PHP 84%jQuery 80%OpenSSL 73%Google Analytics 54%Bootstrap 44%Open Graph 38%Google Font API 38%Cloudflare 33%Google Tag Manager 28%
Share of a 3,000-domain sample of CentOS users that also run each.