Google Calendar - Spend less time managing your day & more time enjoying it
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
WAVE Calendar - WAVE Calendar is a revolutionary app, which is designed to bring balance to your life
Rainlendar - Rainlendar - Customizable desktop calendar
CalenGoo - Features | 1.0.175 for Android™
Jorte - Schedule books must be practical and has a good design.