Calendarscope Portable Edition
Calendarscope Portable Edition is a full-featured calendar program for planning, managing, and scheduling appointments, meetings, birthdays, vacations, and special events.

It is directed to owners of a USB flash drive, USB HDD, SD card, etc. and users for which mobility and simplicity are the fundamental requirements.
For more information please visit Calendarscope Portable Edition Home page at

http://www.calendarscope.com/portable_calendar.html