A breakdown of the 2.1K+ companies running Cal.com.
Top industries
Information technology and services842
Professional and business services612
Education and training88
Art, sports and recreation83
Health and wellness65
Financial services64
Hospitality and travel43
Retail trade35
No industry recorded: 136
Company size
1–10664 (71%)
11–50165 (18%)
51–25068 (7%)
251–50022 (2%)
501–1,0009 (1%)
1,001–5,0008 (1%)
5,001–10,0003 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 1.2K+
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Frequently asked questions
About the Cal.com data on this page.
How many companies use Cal.com?
Firmable holds confirmed Cal.com detections for 2,156 distinct companies, 1,933 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Cal.com?
Warren Wilson College, Culver-Stockton College and Acts 29 are among the most prominent in the current set.
What industries use Cal.com?
Information technology and services, professional and business services and education and training lead the set, across 19 industries in total.
What size companies use Cal.com?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Cal.com users based?
The United States, Canada, Australia and Japan account for most detections, across 13 countries.
How current is this data?
1,933 companies were confirmed in the last 90 days. Last detection 13 October 2026.
