Message boards
Who left Mastodon, and who still runs it
11 websites in the top 1M run Mastodon, observed directly from the rendered page in the July 2026 crawl.
Some companies running Mastodon
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
HSTS 100%PWA 100%Open Graph 100%core-js 64%Webpack 45%Ruby 45%Cloudflare 45%Ruby on Rails 45%HTTP/3 36%Amazon Web Services 27%
Share of a 11-domain sample of Mastodon users that also run each.