Appointment scheduling; Widgets
Who left Checkfront, and who still runs it
2 websites in the top 1M run Checkfront, observed directly from the rendered page in the July 2026 crawl.
Some companies running Checkfront
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
RSS 100%jQuery Migrate 100%PHP 100%Priority Hints 100%WordPress 100%jQuery 100%MySQL 100%Open Graph 100%Google Analytics 100%Google Tag Manager 50%
Share of a 2-domain sample of Checkfront users that also run each.