Open Source Alternatives to Microsoft Bookings

An appointment scheduling software that allows users to manage bookings and calendar availability. This tool is designed for businesses and professionals to coordinate meetings and appointments with clients by providing a public facing page where customers can select available time slots. It integrates with other Microsoft 365 services to synchronize schedules and automate the booking process, reducing the need for manual coordination via email. The software is used to organize staff availability, set specific service durations, and send automated reminders to attendees. It is deployed as part of the Microsoft 365 ecosystem for organizations seeking to streamline their scheduling workflows. The product functions as a centralized system for managing time based appointments across a team.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Microsoft Bookings give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to Microsoft Bookings. The most popular is Cal.com. It uses the MIT license and ships an official Docker image.