Operating systems

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

# Technology Websites tracked Market share
1
Ubuntu
1,200,000
38%
2
Windows Server
1,100,000
35%
3
UNIX
360,000
11%
4
Debian
330,000
10%
5
CentOS
120,000
4%
6
AlmaLinux
33,000
1%
7
Red Hat
32,000
1%
8
FreeBSD
12,000
0.4%
9
Oracle Linux
5,300
0.2%
10
Fedora
3,800
0.1%

Start with a report template

Choose a ready-made report to generate a filtered lead list, or build your own from scratch.

Websites in United Kingdom

Find websites using Operating systems technologies in United Kingdom.

Websites in United States

Find websites using Operating systems technologies in United States.

Companies with emails and phone numbers

Prioritize Operating systems websites with both contact types available.

Top 5,000 websites by traffic

Start with the highest-traffic websites using Operating systems technologies.

Websites with a .com domain

Limit results to Operating systems websites on .com domains.

5,000 low-traffic websites

Focus on lower-traffic websites using Operating systems technologies.

Create your own

Wappalyzer is trusted by thousands of professionals world-wide