CentOS vs Scientific Linux
Head-to-head usage across the sites we track.
Top sites by authority
CentOS · Scientific Linux · 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 · Scientific Linux · share of sites in each country using one or the other
Japan
13,559
113
United States
12,731
109
India
7,525
105
South Korea
6,436
51
Italy
5,915
85
United Kingdom
5,735
86
Germany
5,653
89
Brazil
5,371
69
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | CentOS | Scientific Linux |
|---|---|---|
| LCP | 1.6 s | 1.3 s |
| INP | 75 ms | 50 ms |
| CLS | 0 | 0 |
| TTFB | 600 ms | 550 ms |
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.
Scientific Linux to CentOS
| Domain | When |
|---|---|
| splithotels.net | Dec 2025 |