Websites Powered by mod_rack

1,023 websites tracked using mod_rack (Web server extensions) · phusionpassenger.com

mod_rack is a web-server extension or module. Its official site is phusionpassenger.com. PoweredBy tracks the websites that use mod_rack across the public web; the tracked counts, adoption trend, and site list on this page are updated from our ongoing crawl of the web server extensions ecosystem.

Usage trend

Core Web Vitals

Median site among 319 mod_rack sites with Chrome UX data, p75 values, Sep 2026.

Top countries

United States 121

Japan 75

India 66

United Kingdom 61

Germany 58

Canada 55

Spain 54

Taiwan 54

Sites using mod_rack by audience country, Chrome UX Report.

Usage by industry

Share of each industry's websites with a detected stack that use mod_rack; 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 mod_rack in recent crawls. Only 372 domains worldwide score 9 or higher.

Websites using mod_rack

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).

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