A breakdown of the 121K+ companies running CentOS.
Top industries
Information technology and services16K+
Professional and business services11K+
Media and telecommunications7.7K+
Art, sports and recreation7.6K+
Industrial and manufacturing7.4K+
Education and training6.9K+
Financial services6.1K+
Construction and building6K+
No industry recorded: 21K+
Company size
1–1018,797 (31%)
11–5015,618 (25%)
51–25014,515 (24%)
251–5004,818 (8%)
501–1,0002,312 (4%)
1,001–5,0003,580 (6%)
5,001–10,000847 (1%)
10,001+1,087 (2%)
Share of companies with a recorded size, by employees.
No size recorded: 60K+
Versions detected
1 versions across the confirmed companies. Counts are distinct companies seen running that version.
7.9.20091
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Frequently asked questions
About the CentOS data on this page.
How many companies use CentOS?
Firmable holds confirmed CentOS detections for 121,850 distinct companies, 41,472 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use CentOS?
Assured Guaranty, Socure and Stonepeak are among the most prominent in the current set.
What industries use CentOS?
Information technology and services, professional and business services and media and telecommunications lead the set, across 19 industries in total.
What size companies use CentOS?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are CentOS users based?
The United States, Canada, Japan and Australia account for most detections, across 13 countries.
How current is this data?
41,472 companies were confirmed in the last 90 days. Last detection 14 October 2026.
