1
Ubuntu is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
2
In terms of market share, CentOS is clearly lagging behind, losing to Ubuntu in all segments.
1
Ubuntu has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Adult, Arts & Entertainment and 20 other categories.
2
CentOS hasn't got a lead over Ubuntu in any websites category.
1
Ubuntu is leading in most countries, including United States, Russia, Germany, India and 160 other countries.
2
CentOS is leading in Japan and South Korea.