excellent software for Macs to sync iCal with Google Calendar. Free 30-day trial, $25 to licencse it. Winner of Macworld Eddys 2008. Can also sync to iPhone as read-write. Great blog with other useful Mac tips and very clear visual tutorials on using the tool.
Software for Mac OS 10.4 and Leopard 10.5. In addition to syncing calendars on your LAN, BusySync syncs with Google Calendar, allowing you to:
* View and edit calendars online - Calendar events can be viewed/edited in both iCal and Google Calendar and automatically synchronized between the two.
* Sync calendars between home and work - Users can sync their home and office computers with Google Calendar (as an alternative to syncing calendars with MobileMe).
* Share calendars remotely - Users in remote locations can share calendars with each other by syncing with Google Calendar, even while traveling.