7 self-hosted Calendly alternatives

Self-hostable scheduling software for appointments and bookings with customizable booking pages, availability rules, reminders, and integrations for teams and developers.

46.9k stars14.6k forksMITlast commit 22 Jul 2026Actively maintained

Open-source, self-hosted polling tool to find the best date/time with no login required.

5.2k stars541 forksAGPL-3.0last commit 27 Jul 2026Actively maintained

Open source appointment scheduler for customer bookings, provider management, and Google Calendar sync, deployable on your own PHP/MySQL server.

4.3k stars1.5k forksGPL-3.0last commit 30 Jun 2026Actively maintained

LibreBooking is an open-source scheduling system for managing resource reservations with calendars, waitlists, quotas, reporting, and role-based access control.

769 stars365 forksGPL-3.0last commit 26 Jul 2026Actively maintained

Django-based application to create date/time polls and general surveys for scheduling meetings, with anonymous voting, private events, and LDAP support.

312 stars40 forksGPL-3.0last commit 24 Jun 2026Actively maintained

A lightweight, curl-first free/busy scheduler that syncs availability from a CalDAV calendar and can send iCal booking invites via SMTP.

Activity unknown

Free/libre web service for creating date-based scheduling polls and classic option polls; no registration required. Operated by Framasoft and built on the Pollaris open-source project.

Activity unknown