UI frameworks
Who left MUI, and who still runs it
6,724 websites in the top 1M run MUI, observed directly from the rendered page in the July 2026 crawl.
1,393
stopped running it that month
155
of those are 11–500 employees
5,122
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running MUI
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
React 100%Emotion 80%Google Analytics 67%Open Graph 62%Cloudflare 58%HSTS 57%core-js 56%Webpack 54%Node.js 51%Google Tag Manager 51%
Share of a 3,000-domain sample of MUI users that also run each.