Miscellaneous
Who left Prefix-Free, and who still runs it
276 websites in the top 1M run Prefix-Free, observed directly from the rendered page in the July 2026 crawl.
108
stopped running it that month
12
of those are 11–500 employees
53
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Prefix-Free
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
jQuery 99%Google Analytics 64%PHP 58%Open Graph 54%Cloudflare 47%Google Font API 47%Google Tag Manager 39%core-js 36%Bootstrap 35%jQuery UI 34%
Share of a 276-domain sample of Prefix-Free users that also run each.