iCal Birthday Shifter makes events for the birthdays of people in your Address Book. The source code is included with the archive.
Version 1.2 fixes the following:
- New events will now be "all-day" events. Requires iCal 1.0.2 or later
- Added toolbar with items to launch iCal and Address Book, for convenience.
- Got rid of coloured-checkboxes graphics. We now show swatches instead.
- Added several localisations
- Mac OS X 10.2 or later, Apple iCal.