Web servers
Who left Phusion Passenger, and who still runs it
1,210 websites in the top 1M run Phusion Passenger, observed directly from the rendered page in the July 2026 crawl.
234
stopped running it that month
21
of those are 11–500 employees
416
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Phusion Passenger
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
jQuery 75%Ruby 72%Ruby on Rails 71%Google Analytics 63%Nginx 51%Cloudflare 49%Open Graph 48%HSTS 46%Bootstrap 40%core-js 40%
Share of a 1,210-domain sample of Phusion Passenger users that also run each.