Agendus - Sync with iCal versions

iCal birthday and anniversary calendars with alarms.

Free

A free utility that copies events from Now Up-to-Date to iCal.

Alternative to Apple's iCal birthday calendar that has a range of features that has made it indispensable for many iCal and Address Book users.

Free

Automatically puts your TimeTrade appointments on your Mac's iCal calendar.

Free

BirthdayCal supports iCal alarms, recurrences, and all-day events.