A breakdown of the 368K+ companies running Windows.
Top industries
Information technology and services62K+
Professional and business services40K+
Industrial and manufacturing36K+
Financial services25K+
Construction and building25K+
Health and wellness21K+
Education and training20K+
Art, sports and recreation17K+
No industry recorded: 31K+
Company size
1–1044,285 (16%)
11–5069,474 (25%)
51–25089,632 (32%)
251–50038,563 (14%)
501–1,00014,889 (5%)
1,001–5,00019,015 (7%)
5,001–10,0002,877 (1%)
10,001+2,592 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 87K+
Versions detected
1 versions across the confirmed companies. Counts are distinct companies seen running that version.
811
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Frequently asked questions
About the Windows data on this page.
How many companies use Windows?
Firmable holds confirmed Windows detections for 368,372 distinct companies, 315,533 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Windows?
Cresset, xeris pharmaceuticals, inc. and Needham Bank are among the most prominent in the current set.
What industries use Windows?
Information technology and services, professional and business services and industrial and manufacturing lead the set, across 19 industries in total.
What size companies use Windows?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Windows users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
315,533 companies were confirmed in the last 90 days. Last detection 14 October 2026.
