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 12,731

121,997

India 7,525

60,938

United Kingdom 5,735

43,541

Italy 5,915

40,345

Brazil 5,371

35,974

Germany 5,653

32,389

Canada 4,750

32,014

Türkiye 2,579

31,421

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, Aug 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