PaaS
Who left Heroku, and who still runs it
67 websites in the top 1M run Heroku, observed directly from the rendered page in the July 2026 crawl.
2
stopped running it that month
1
of those are 11–500 employees
65
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Heroku
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Cloudflare 85%Google Analytics 81%Open Graph 72%HSTS 69%Google Tag Manager 63%Cloudflare Bot Management 60%core-js 58%Apple iCloud Mail 55%HTTP/3 51%jQuery 51%
Share of a 67-domain sample of Heroku users that also run each.