Web servers
Who left Cowboy, and who still runs it
44 websites in the top 1M run Cowboy, observed directly from the rendered page in the July 2026 crawl.
19
stopped running it that month
1
of those are 11–500 employees
55
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Cowboy
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Erlang 100%jQuery 52%core-js 43%Google Font API 41%Cloudflare 41%HSTS 39%Google Analytics 36%Google Workspace 34%Bootstrap 34%Open Graph 32%
Share of a 44-domain sample of Cowboy users that also run each.