Google Calendar - Spend less time managing your day & more time enjoying it
Qloapps - Open Source System - Build Hotel Booking Website and Manage Online & On-Desk Bookings.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
FewohBee - Web based management tool for hotels, pensions, accommodations and vacation homes
Calendar Lock PEA - Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.
BSI Hotel Booking System - BSI Hotel Booking System is a real time online hotel booking.