Widgets
Who left FullCalendar, and who still runs it
2,803 websites in the top 1M run FullCalendar, observed directly from the rendered page in the July 2026 crawl.
928
stopped running it that month
68
of those are 11–500 employees
1,371
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running FullCalendar
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
TypeScript 100%jQuery 99%Moment.js 64%jQuery UI 62%Bootstrap 61%Google Analytics 60%PHP 60%Open Graph 55%Google Font API 55%Cloudflare 55%
Share of a 2,803-domain sample of FullCalendar users that also run each.