#1
Open-source, self-hosted polling tool to find the best date/time with no login required.
5.2k stars553 forksAGPL-3.0last commit Actively maintained
4 self-hosted Cal.com alternatives
Cal.com is an open scheduling platform providing hosted booking pages, calendar integrations (Google/Outlook/iCal), team and round‑robin scheduling, group bookings, and workflow automation. A self‑hostable version is also available.
Alternatives to Cal.com
Open source appointment scheduler for customer bookings, provider management, and Google Calendar sync, deployable on your own PHP/MySQL server.
4.4k stars1.6k forksGPL-3.0last commit Actively maintained
LibreBooking is an open-source scheduling system for managing resource reservations with calendars, waitlists, quotas, reporting, and role-based access control.
802 stars377 forksGPL-3.0last commit Actively maintained
#4
A lightweight, curl-first free/busy scheduler that syncs availability from a CalDAV calendar and can send iCal booking invites via SMTP.
Activity unknown
What replacing Cal.com actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 3 of 4 shipped a commit in the last six months. Licences in this list: AGPL-3.0, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Scheduling, Booking & Appointments.
