Agile Reminders Pro 

A Stand Alone Reminder Program That Gets The Job Done ... Professionally. Runs in your system tray until it's time for a popup reminder or until you wish to exercise some of it's many facilities.
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AlarmWiz 

AlarmWiz is an easy to use reminder program and task scheduler which can play audio files, dial Internet connections, send emails, perform FTP transfers, launch programs, and more.
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GigAlarm 

GigAlarm is an alarm program, capable of thousands of different alarms. The alarm can be either a wave file playing (random or selected), a program/file running (also random or selected), changing the background wallpaper, a window or shutdown.
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Date Wizard 

DateWizard is a small reminder type program for all those meetings, birthdays etc. which you often forget. A Shortcut can be placed in your StartUp folder so that it starts every time the computer boots up.
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