List of Top Free Open Source & Self Hosted Application for Booking and Scheduling

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Event scheduling, reservation, and appointment management software.

Alf.io – The open source ticket reservation system. GPL-3.0 Java
Cal.com – The open-source online appointment scheduling system. MIT Nodejs
Easy!Appointments – A highly customizable web application that allows your customers to book appointments with you via the web. GPL-3.0 PHP
QloApps – An open-source, customizable and intuitive web-based hotel reservation system and a booking engine. OSL-3.0 PHP
Seatsurfing – Webbased app to book seats, desks and rooms for offices. GPL-3.0 Docker

Ashwani K

👤 About the Author

Ashwani is passionate about DevOps, DevSecOps, SRE, MLOps, and AiOps, with a strong drive to simplify and scale modern IT operations. Through continuous learning and sharing, Ashwani helps organizations and engineers adopt best practices for automation, security, reliability, and AI-driven operations.

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