FamCal - FamCal is an organized and managed calendar to track the family records like events, notes, and dates of births.
Google Calendar - Spend less time managing your day & more time enjoying it
Power Planner - Record homework and class schedule.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Sectograph - Sectograph app enables you to create a visual event tracker to keep track of all your upcoming events and due tasks right from the home screen.
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.