Anacron - Anacron is a periodic command scheduler. It executes commands at intervals specified in days.
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.
HotelDruid - Hoteldruid (ex Php-Residence) is an open source program for hotel management developed by...
mcron - mcron is GNU's implementation of cron. It is a 100% compatible replacement for Vixie cron.
OrgBusiness Software - Organize, track, manage any information related to your home, business or organization.