A breakdown of the 8.9K+ companies running GitBook.
Top industries
Information technology and services4.4K+
Financial services767
Professional and business services601
Art, sports and recreation402
Education and training349
Media and telecommunications226
Industrial and manufacturing208
Construction and building102
No industry recorded: 1.2K+
Company size
1–102,457 (36%)
11–502,401 (35%)
51–2501,289 (19%)
251–500273 (4%)
501–1,000138 (2%)
1,001–5,000161 (2%)
5,001–10,00046 (1%)
10,001+66 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 2.1K+
Versions detected
3 versions across the confirmed companies. Counts are distinct companies seen running that version.
3.2.32
2.5.11
2.6.71
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Frequently asked questions
About the GitBook data on this page.
How many companies use GitBook?
Firmable holds confirmed GitBook detections for 8,944 distinct companies, 8,356 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use GitBook?
National Student Clearinghouse, Foundation Source and Medable, Inc are among the most prominent in the current set.
What industries use GitBook?
Information technology and services, financial services and professional and business services lead the set, across 19 industries in total.
What size companies use GitBook?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are GitBook users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
8,356 companies were confirmed in the last 90 days. Last detection 13 October 2026.
