Feature management
Who left FlagSmith, and who still runs it
108 websites in the top 1M run FlagSmith, observed directly from the rendered page in the July 2026 crawl.
22
stopped running it that month
4
of those are 11–500 employees
140
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running FlagSmith
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Open Graph 71%Google Analytics 70%React 69%HSTS 67%Google Tag Manager 65%Cloudflare 58%core-js 57%Amazon Web Services 51%Priority Hints 50%Google Workspace 46%
Share of a 108-domain sample of FlagSmith users that also run each.