Cal
cal.com · Video & meetings · Customer & Communications
Cal.com is a modern, open-source scheduling infrastructure platform founded in 2021 and based in San Francisco, California. It aims to simplify time coordination for businesses, products, and public services by providing a customizable alternative to traditional scheduling tools.
Company facts
| Founded | 2021 (5 years) |
| Latest funding | Series A |
| Employees | 39 |
| Headquarters | San Francisco, United States |
| Trusted networks on Proven | 2 investor, bank and government networks offer Cal to their members |
Company facts from Apollo.io company data. Network, offer and redemption data from the Proven platform. A Proven Score is published once publicly named clients are verified with sources.
Competitors in Video & meetings
| Zoom | Score in progress |
| Grain | Score in progress |
| Aircall | Score in progress |
| Dialpad | Score in progress |
| Gather | Score in progress |
| Circleback | Score in progress |
| Cal | Score in progress |
| SpatialChat | Score in progress |
| MeetGeek | Score in progress |
| Tella | Score in progress |
| Roam | Score in progress |
Source: Proven platform data, public records and vendor websites. Vendors cannot pay to change a score. Methodology. Updated 2026-10-21.