JavaScript libraries
Who left script.aculo.us, and who still runs it
700 websites in the top 1M run script.aculo.us, observed directly from the rendered page in the July 2026 crawl.
152
stopped running it that month
13
of those are 11–500 employees
95
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running script.aculo.us
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Prototype 99%jQuery 80%PHP 65%Google Analytics 64%MySQL 49%Cloudflare 47%Magento 45%Google Tag Manager 43%Cart Functionality 43%HSTS 38%
Share of a 700-domain sample of script.aculo.us users that also run each.