JavaScript libraries
Who left Wurfl, and who still runs it
732 websites in the top 1M run Wurfl, observed directly from the rendered page in the July 2026 crawl.
26
stopped running it that month
4
of those are 11–500 employees
644
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Wurfl
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Google Analytics 91%Google Tag Manager 89%Cloudflare 89%core-js 85%Prebid 81%Cloudflare Bot Management 79%reCAPTCHA 77%Google Publisher Tag 76%Open Graph 75%ID5 75%
Share of a 732-domain sample of Wurfl users that also run each.