CMS
Who left Umbraco, and who still runs it
473 websites in the top 1M run Umbraco, observed directly from the rendered page in the July 2026 crawl.
60
stopped running it that month
4
of those are 11–500 employees
145
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Umbraco
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Microsoft ASP.NET 100%Google Analytics 82%Open Graph 78%Google Tag Manager 77%HSTS 69%Cloudflare 68%jQuery 64%core-js 60%Microsoft 365 51%Cloudflare Bot Management 44%
Share of a 473-domain sample of Umbraco users that also run each.