CalendarPipe

CalendarPipe lets you create pipes that sync calendars on your terms — filtering which events cross over, transforming titles/details, and one- or two-way syncing between Google Calendar, Outlook and Apple Calendar — so work/personal and shared calendars stay coordinated without leaking private details.

It targets people juggling multiple calendars who want fine-grained, rule-based control over what syncs where instead of all-or-nothing sharing.