Affiliate programs
Who left Duel, and who still runs it
26 websites in the top 1M run Duel, observed directly from the rendered page in the July 2026 crawl.
2
stopped running it that month
2
of those are 11–500 employees
18
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Duel
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Cloudflare 100%Angular 100%Cloudflare Bot Management 100%Node.js 100%MongoDB 100%TypeScript 100%Open Graph 96%core-js 92%Google Analytics 88%Cart Functionality 85%
Share of a 26-domain sample of Duel users that also run each.