incron - This program is an "inotify cron" system. It consists of a daemon and a table manipulator.

Qloapps - Open Source System - Build Hotel Booking Website and Manage Online & On-Desk Bookings.

fcron - Fcron is a scheduler designed for Unix/Linux systems, especially usefull when your system is not up all the day long.

FewohBee - Web based management tool for hotels, pensions, accommodations and vacation homes

Anacron - Anacron is a periodic command scheduler. It executes commands at intervals specified in days.

HotelDruid - Hoteldruid (ex Php-Residence) is an open source program for hotel management developed by...