A breakdown of the 1.4K+ companies running IBM Rational.
Top industries
Information technology and services501
Professional and business services221
Industrial and manufacturing205
Financial services111
Construction and building85
Media and telecommunications46
Government and public services41
Education and training28
No industry recorded: 40
Company size
1–1081 (6%)
11–50159 (12%)
51–250307 (23%)
251–500171 (13%)
501–1,00090 (7%)
1,001–5,000193 (14%)
5,001–10,00095 (7%)
10,001+246 (18%)
Share of companies with a recorded size, by employees.
No size recorded: 72
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Frequently asked questions
About the IBM Rational data on this page.
How many companies use IBM Rational?
Firmable holds confirmed IBM Rational detections for 1,414 distinct companies, 198 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?
THL Partners, Edgewater Federal Solutions, Inc. and Veritas Capital are among the most prominent in the current set.
What industries use IBM Rational?
Information technology and services, professional and business services and industrial and manufacturing lead the set, across 19 industries in total.
What size companies use IBM Rational?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are IBM Rational users based?
The United States, Australia, Canada and Indonesia account for most detections, across 13 countries.
How current is this data?
198 companies were confirmed in the last 90 days. Last detection 20 September 2026.
