Always forgetting birthdays? That should become less worrisome now that BusyMac has released a notable update to BusyCal, their iCal-replacement calendar program with sharing capabilities. Version 1.3 adds a new Birthdays calendar that can sync with contact information in Address Book and displays the person's age in the event title. Other new features include integration with Address Book for meeting invitations, the capability to display week numbers, enhanced drag-and-drop capabilities for converting between events and to-dos, and additions to the Help menu. The update also adds French, German, Italian, and Dutch localizations. Several bugs have also been fixed including a few related to iCal syncing, a crashing bug that occurred when sending meeting updates, and a hanging bug that occurred when backing up large attachments. Full release notes are available on BusyMac's Web site. ($49 new, free update, 8.2 MB)