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 14,716

137,903

India 8,682

69,310

United Kingdom 6,517

49,506

Italy 7,152

47,568

Brazil 6,042

39,706

Germany 6,680

36,929

Canada 5,513

36,570

Türkiye 3,017

36,852

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, Jun 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