A breakdown of the 110 companies running IBM Rational ClearCase.
Top industries
Information technology and services39
Industrial and manufacturing24
Professional and business services14
Construction and building9
Financial services5
Education and training3
Media and telecommunications3
Transport3
No industry recorded: 3
Company size
1–107 (7%)
11–5012 (12%)
51–25019 (19%)
251–50010 (10%)
501–1,0002 (2%)
1,001–5,00015 (15%)
5,001–10,0002 (2%)
10,001+35 (34%)
Share of companies with a recorded size, by employees.
No size recorded: 8
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Frequently asked questions
About the IBM Rational ClearCase data on this page.
How many companies use IBM Rational ClearCase?
Firmable holds confirmed IBM Rational ClearCase detections for 110 distinct companies, 5 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use IBM Rational ClearCase?
FANUC CORPORATION, Tellabs and Cognizant are among the most prominent in the current set.
What industries use IBM Rational ClearCase?
Information technology and services, industrial and manufacturing and professional and business services lead the set, across 14 industries in total.
What size companies use IBM Rational ClearCase?
Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.
Where are IBM Rational ClearCase users based?
The United States, Canada, Australia and Japan account for most detections, across 13 countries.
How current is this data?
5 companies were confirmed in the last 90 days. Last detection 2 September 2026.
