UI frameworks
Who left Pure CSS, and who still runs it
499 websites in the top 1M run Pure CSS, observed directly from the rendered page in the July 2026 crawl.
222
stopped running it that month
7
of those are 11–500 employees
127
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Pure CSS
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
jQuery 76%Google Analytics 71%Open Graph 65%Cloudflare 58%Google Tag Manager 54%PHP 45%Google Font API 41%HSTS 40%core-js 40%HTTP/3 33%
Share of a 499-domain sample of Pure CSS users that also run each.