Alf.io source
Ticket reservation system.
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Self-hosted Booking and Scheduling software (2026)
Event scheduling, reservation, and appointment management software.
Related: Polls and Events · Groupware
8 open-source apps · all free & self-hostable
Cal.diy source
Online appointment scheduling system.
Easy!Appointments source
Allows your customers to book appointments with you via the web.
Hi.Events source
Event management and ticketing platform for conferences, concerts, and more. Offering customizable event pages and embeddable ticket widgets.
LibreBooking source
Resource scheduling solution offering a flexible, mobile-friendly, and extensible interface for organizations to manage resource reservations.
QloApps source
Customizable and intuitive web-based hotel reservation system and a booking engine.
Rallly source
Create polls to vote on dates and times (alternative to Doodle).
Seatsurfing source
Webbased app to book seats, desks and rooms for offices.