Cal.com (Cal.eu)

Cal.com, formerly known as Calendso, is a prominent open-source scheduling infrastructure platform. The specific domain cal.eu represents the platform's dedicated European expansion, designed to cater to businesses requiring strict data residency within the European Union. While the software is digital and developed by a global distributed workforce, its European infrastructure is hosted on servers located within EU borders to ensure 100% compliance with GDPR and local data regulations.

The brand was founded with a mission to provide an open-source alternative to proprietary scheduling tools, prioritizing user privacy and customization. By launching Cal.eu, the company has solidified its position as a privacy-first leader in the scheduling space, offering high-security environments for enterprise clients, healthcare providers, and government agencies that operate under rigorous data protection frameworks.