Operating systems

Servers

These are the top Operating systems technologies based on market share in 2026.

# Technology Websites tracked Market share
1
Windows Server 		677,000
39%
2
Ubuntu 		610,000
35%
3
UNIX 		169,000
10%
4
Debian 		161,000
9%
5
CentOS 		67,800
4%
6
Red Hat 		25,200
1%
7
AlmaLinux 		17,500
1%
8
FreeBSD 		6,300
0.4%
9
Fedora 		2,100
0.1%
10
Gentoo 		840
0.05%

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Websites in United Kingdom

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Websites in United States

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Companies with emails and phone numbers

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Top 5,000 websites by traffic

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Websites with a .com domain

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5,000 low-traffic websites

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