Outlook Google Calendar Sync for Mac keeps your Outlook events mirrored into Google Calendar without needing Microsoft admin approval. It runs locally on your Mac, supports multiple calendar sync jobs, avoids sending duplicate invites, and quietly keeps your schedule up to date in the background.
I built this because I kept running into the same problem: my important calendars lived in Outlook, but my primary personal calendar was in Google. There are good Windows tools for this, but I could not find a solid Mac option that ran locally.
Outlook Google Calendar Sync for Mac is built around that gap. It runs on your Mac against the Outlook desktop client, so you do not need a Microsoft admin to approve an OAuth app or grant tenant-wide access. You can keep work, family, and daily life in sync without routing calendar data through another cloud service.
Outlook Google Calendar Sync for Mac