Web server extensions
Who left mod_rack, and who still runs it
9 websites in the top 1M run mod_rack, observed directly from the rendered page in the July 2026 crawl.
2
stopped running it that month
1
of those are 11–500 employees
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running mod_rack
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 100%mod_rails 100%Phusion Passenger 100%Ruby on Rails 100%Ruby 100%jQuery 67%Google Font API 56%Ubuntu 56%Google Analytics 56%Google Workspace 44%
Share of a 9-domain sample of mod_rack users that also run each.