Web frameworks
Who left Sapper, and who still runs it
11 websites in the top 1M run Sapper, observed directly from the rendered page in the July 2026 crawl.
3
stopped running it that month
1
of those are 11–500 employees
6
adopted it in the last year
Confirmed across two consecutive crawls, not a single month. Build the list →
Some companies running Sapper
Every row in a full list carries the prospect's whole detected stack.
Not currently available as a list.
What else they run
Svelte 100%Node.js 100%Google Analytics 82%PWA 73%Google Tag Manager 73%Amazon Web Services 64%Open Graph 64%Nginx 55%Facebook Pixel 45%Google Font API 45%
Share of a 11-domain sample of Sapper users that also run each.