Gifts 'n Reminders 

Turn your PC into a reminder service, with Gifts 'n Reminders! Features include: reminders for birthdays and special occasions, monthly calendars, gift planning, purchase histories, personal profiles, shopping lists, budget reports, and much more.
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Calendar/Reminder 

Calendar/Reminder for Windows: Have you forgotten a birthday, anniversary, meeting, or any other special occasion? Let the computer do the work for you. The program allows you to keep track of all the above.
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MindIT! 

Talking alarm clock featuring 8 alarms and 8 task schedules, automatic atomic time synchronization, Swatch InternetTime support, holidays and observances reminder with database updatable via Internet, one click access to system tools and features
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DaanCalendar 

DaanCalendar is a small, fast and simple program that will let you insert events for each day of a month. Publish the calendar to a webpage and an active reminder are some of it's features.
calendar events scheduling

BubbleClock 

BubbleClock are analog clocks and reminder with semitransparent effect (only Windows 2000/XP). Various kinds of clock skins. Synchronization your computer clock.
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DreamBirthday 

DreamBirthday is a small but powerful reminder application that sits quietly in your system tray. It will alert you of events on the day they occur, and can notify you at regular intervals of any up and coming important dates. It is 100% free.
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