JavaScript libraries
Who left Immutable.js, and who still runs it
53 websites in the top 1M run Immutable.js, observed directly from the rendered page in the July 2026 crawl.
3
stopped running it that month
0
of those are 11–500 employees
10
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Immutable.js
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Open Graph 85%jQuery 85%React 81%HSTS 77%Amazon Web Services 74%jQuery UI 68%Bootstrap 66%reCAPTCHA 62%PHP 62%Axios 58%
Share of a 53-domain sample of Immutable.js users that also run each.