1)   RedBox Organizer 7.0
Get control of your schedule with this PIM. "I love my RedBox Organizer. It has everything I need for a personal organizer!" - CNET

 2)   PiggyBob 3.0
PiggyBob is an extremely convenient tool to help you keep track of your income and expenses, plus a very useful calendar to record all important events in your life. All the data you record in PiggyBob can be handily visualized and printed in graphs.

 3)   iCal 3.10
iCal is a web calendar server. Anyone with a web browsers can access the calendars on their local Intranet or Internet. Any number of calendars can be created and accessed by any number of users. Security controls who can make calendar entries.

 4)   SuperCool Calendar 1.01
SuperCool Calendar - PIM software about calendar with alarm and reminder. Ever felt that you have problems managing your time? With SuperCool Calendar on your Windows desk this will never be a problem again. No more missed meetings or birthdays...