Companies that use Cal.com
156 companies use Cal.com, as of October 2026.
Cal.com: Open-source scheduling. We've found 156 companies using Cal.com, most often in B2B (13%) and Software (12%), typically with 1–10 employees and 52% based in United States.
Customers156companies use it
Most popular withSecurity136× more likely than average
Typical customer1–10employees · mostly United States
Showing 40 of 159
Cal.com customers also use
How much more likely Cal.com customers are to use each tool than the average company.
OneleetSecurity & Compliance38×more likely
HeapAnalytics33×more likely
MintlifySupport & Docs32×more likely
CrispSupport & Docs28×more likely
ClerkAuth & Identity22×more likely
GitHubDev Tools22×more likely
RudderStackAnalytics21×more likely
PostHogAnalytics21×more likely
Vercel AnalyticsAnalytics20×more likely
web-vitalsMonitoring9.5×more likely
Next.jsFrontend7.0×more likely
What kind of companies use Cal.com
Segments where Cal.com customers are more common than among all the companies we track.
- Security5% of customers136×more likely
- B2B11% of customers68×more likely
- Engineering, Product and Design8% of customers60×more likely
- Infrastructure5% of customers54×more likely
- Marketing4% of customers51×more likely
- 1–10 employees86% of customers16×more likely
- Software10% of customers1.6×more likely
Industry
Company size
Country
Breakdowns cover the 155 customers with company details so far.
Alternatives to Cal.com
Other tools in the same category, by how many companies use them.