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.

Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

Rainlendar - Rainlendar - Customizable desktop calendar

Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.

Lightning Calendar - Organize your life — it’s about time!