CentOS vs Windows Server

Head-to-head usage across the sites we track.

Top sites by authority

CentOS · Windows Server · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

CentOS · Windows Server · share of sites in each country using one or the other

United States 12,631

118,668

India 7,375

59,691

United Kingdom 5,698

43,146

Italy 6,135

41,478

Brazil 5,311

35,359

Germany 5,581

31,833

Canada 4,772

31,851

Türkiye 2,551

31,348

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All CentOS sites · All Windows Server sites