JavaScript libraries
Who left PubSubJS, and who still runs it
5,652 websites in the top 1M run PubSubJS, observed directly from the rendered page in the July 2026 crawl.
138
stopped running it that month
13
of those are 11–500 employees
3,826
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running PubSubJS
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
core-js 90%HSTS 85%Cloudflare 84%Priority Hints 77%Swiper 75%React 75%PWA 74%Webpack 72%Lodash 71%cdnjs 66%
Share of a 3,000-domain sample of PubSubJS users that also run each.