Who left Jenkins, and who still runs it

1 websites in the top 1M run Jenkins, observed directly from the rendered page in the July 2026 crawl.

What else they run

Cloudflare 100%Cloudflare Browser Insights 100%Cloudflare Rocket Loader 100%Google AdSense 100%Google Analytics 100%HTTP/3 100%Java 100%RSS 100%

Share of a 1-domain sample of Jenkins users that also run each.