Share of companies with a recorded size, by employees.
No size recorded: 36
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Frequently asked questions
About the OpenJDK data on this page.
How many companies use OpenJDK?
Firmable holds confirmed OpenJDK detections for 335 distinct companies, 52 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use OpenJDK?
Capital Technology Group, ALTEN and Goldbelt Nighthawk, LLC are among the most prominent in the current set.
What industries use OpenJDK?
Information technology and services, financial services and professional and business services lead the set, across 16 industries in total.
What size companies use OpenJDK?
Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.
Where are OpenJDK users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
52 companies were confirmed in the last 90 days. Last detection 19 September 2026.
