Cal.com, Inc.

Cal.com, Inc. develops an open-source scheduling infrastructure platform that lets individuals and businesses manage appointments, bookings, and calendar workflows. The company was founded in 2021 by Philipp Vincent Krüger and Bailey Pumfleet, and is headquartered in San Francisco, California. Its core product, Cal.com, is positioned as an open-source alternative to Calendly, allowing users to self-host or use a hosted cloud version.

The platform offers customizable booking pages, team scheduling, calendar integrations (including Google Calendar and Outlook), video conferencing integrations, and an API for developers to embed scheduling functionality into their own applications. Cal.com has attracted a developer-focused user base due to its open-source codebase hosted on GitHub, and has expanded into enterprise and platform offerings for companies building scheduling into their own products.

The company has raised venture funding from investors including OSS Capital, Point Nine Capital, and Peter Thiel's investment vehicles, among others, across seed and Series A rounds. Cal.com maintains an active open-source community and has grown its team to support both its hosted product and its developer platform business.