SundayBooking
Booking of rooms, equipment and appointments for the church, without double bookings.
Usable, but not a priority at the moment.
Staff and volunteers book rooms and equipment in a shared calendar. The calendar does not allow two bookings at the same time, including the time set aside for setting up and clearing away.
People from outside can ask to rent through a link, without creating an account. Requests go into a queue that the staff approve or decline.
Each room's calendar can be subscribed to (ICS). You sign in with a Sunday account.