JavaScript libraries; RUM
Who left Boomerang, and who still runs it
4,633 websites in the top 1M run Boomerang, observed directly from the rendered page in the July 2026 crawl.
225
stopped running it that month
18
of those are 11–500 employees
1,666
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Boomerang
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Akamai mPulse 88%Akamai 84%HSTS 77%Open Graph 77%Google Analytics 75%core-js 66%Google Tag Manager 62%jQuery 61%Facebook Pixel 47%Cloudflare 47%
Share of a 3,000-domain sample of Boomerang users that also run each.