Top 10 products relevant to Calendar and Encryption

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.

Open Source free

Experience the ease of use of a weekly calendar in the palm of your hand!

ChronoFlo Calendar allows you to make beautiful interactive calendars that you can share on the web.

GMinder is an open source Windows System Tray app that pops up to remind you about Google Calendar events.

Keep a nice, transparent calender on the desktop. Double-click on a day to enter a description.

Reminder manager that reminds you about important events in advance.

Desktop iCalendar is a handy desktop calendar for Windows.

wtplan is a calendar program with a terminal interface, a web interface and git integration.

Nokia software: powerful apps for Symbian smartphones. Upgrade your smartphone’s productivity potential. .

Keep track of Event's and To-do's with SMS and Email notifications.