Websites Powered by Sapper

1,028 websites tracked using Sapper (Web frameworks) · sapper.svelte.dev

Sapper is a web application framework used to build the site's backend. Its official site is sapper.svelte.dev. PoweredBy tracks the websites that use Sapper across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web frameworks ecosystem.

Usage trend

Core Web Vitals

Median site among 361 Sapper sites with Chrome UX data, p75 values, Sep 2026.

Top countries

United States 197

Germany 99

United Kingdom 95

Canada 94

India 90

France 79

Netherlands 74

Spain 70

Sites using Sapper by audience country, Chrome UX Report.

Usage by industry

Share of each industry's websites with a detected stack that use Sapper; industries come from what sites declare in their own structured data.

Top sites by authority

The share of the web's most authoritative domains, by Open Page Rank tier, seen running Sapper in recent crawls. Only 372 domains worldwide score 9 or higher.

Websites using Sapper

Open Page Rank is the domain's authority score (0 to 10, from the open web link graph); the list is ordered by it and covers sites seen in recent crawls. Visits and keywords are estimated US organic search figures.

Download top 10,000 as CSV (zip) →

Columns: domain, Open Page Rank, first seen, last seen, industry (from the site's own structured data, blank when none).

Compare Sapper

• Sapper vs Microsoft ASP.NET
• Sapper vs Laravel
• Sapper vs Ruby on Rails
• Sapper vs Express
• Sapper vs CodeIgniter

Related Web frameworks

• Microsoft ASP.NET
• Laravel
• Ruby on Rails
• Express
• CodeIgniter