GrizeR will remind you of the upcoming holidays and will help to send the letters of congratulation. All you need to do is to add your family and your friends to the program and select from the list the holidays you wish to congratulate them with. At the proper time you will see the notification window and will have an option to send the congratulations via e-mail. GrizeR supports custom reminders as well. - (Read more)

JX Ovulation Calendar is an easy and user-friendly ovulation calculator for women. The program calculates your fertile days and considers your menstrual cycle's possible fluctuations to help you avoid unwanted pregnancy or find out the most prospective days for conceiving a boy or girl. The program will notify you of important changes in your menstrual cycle. - (Read more)

Here's a free alarm on the web. Choose your time and it will work perfectly. - (Read more)