BirthdayAlarm was started in 2001 by Michael and Xochi Birch and Paul Birch (see below) to provide a simple way for people to remember birthdays. The original idea for the website was simple, remind people of birthdays. We received such positive feedback that we began to add additional features to BirthdayAlarm.
There are lots of sites out there that help you with remembering dates and events. Your own email client may also have this functionality. BirthdayAlarm also has eCards, games, and the ability to set other reminders.
Check it out at http://www.birthdayalarm.com/