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
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
BSI Hotel Booking System - BSI Hotel Booking System is a real time online hotel booking.