GBirthday is a birthday reminder application that helps you to remember
your Evolution, Thunderbird, Sunbird contacts' birthdays or from a MySQL
Server or a CSV File.
It puts an icon on notification area which will blink when there is any
of your contacts' birthday today. You can also check if there is any of
your contacs' birthday on next days.

WWW: http://gbirthday.sourceforge.net/