Cal.com

Cal.com is the open-source scheduling infrastructure for everyone. Built as an alternative to Calendly, Cal.com provides scheduling tools that can be self-hosted, customized, and integrated into any workflow.

With over 10 million users and growing, Cal.com has quickly become the scheduling tool of choice for developers, businesses, and organizations that value open-source software and data ownership.

The team is fully distributed across 20+ countries, building in the open with a strong community of contributors. Cal.com combines startup speed with open-source transparency.