GBirthday is an unmaintained Python2 / pygtk birthday reminder. Anybody wants to port it to Python3 and GObject Introspection, please contact the authors.
QBithday is a Python3 / PyQt5 port.
Required packages for proper working: (when imported, exceptions won't always be caugth in a try-except)
gnome-python2-gnome, MySQLdb, pygtk, gtk, configparser