Web servers
Who left Kestrel, and who still runs it
1,274 websites in the top 1M run Kestrel, observed directly from the rendered page in the July 2026 crawl.
384
stopped running it that month
40
of those are 11–500 employees
983
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Kestrel
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%jQuery 70%HSTS 67%Google Analytics 58%Bootstrap 51%Google Tag Manager 48%core-js 42%Open Graph 42%Google Font API 39%Cloudflare 38%
Share of a 1,274-domain sample of Kestrel users that also run each.