SYNCDATE is a two-way calendar sync utility for Google, Outlook, iCloud/CalDAV, and iCal feeds. Connect multiple accounts, pick which calendars sync, and changes propagate in seconds via webhooks. Synced events show as Busy by default — titles stay private unless you opt in. Skip events with exclusion rules. Stop syncing and Clean Exit removes every event it created. MCP server included so your AI agent can manage your calendars and syncs. Free for 2 calendars. Plus $8.99/mo, Pro $16.99/mo.