Google Calendar

Google Calendar manages appointments, recurring events and entire calendar spaces for individuals and teams. At its core are shared calendars with granular visibility levels, invitations with accept and decline options plus automatic availability checks, and the overlay of multiple calendars to spot free slots across a team directly. Added to this are working hours, out-of-office markers, room and resource booking, and booking pages that let external contacts pick free time slots on their own.

The application is deeply interlinked with Gmail, Google Meet and Google Drive: appointments automatically generate video conference links, email invitations enter the calendar directly, and attached documents stay anchored to the appointment. Gemini adds suggestions for scheduling and summaries of recurring event series, included in the business plans without a separate booking. Through the Calendar API, the calendar can also be integrated into your own automations, for instance for automated appointment confirmations or synchronization with third-party systems.

The honest limit: for complex, customer-facing booking logic with multi-step routing, payment integration or fine-grained availability control, specialized scheduling tools are more mature. Google Calendar covers internal and simple external appointment organization well; for demanding booking flows, it is worth comparing dedicated scheduling providers.

For personal Google accounts, Google Calendar is free to use. In a business context, the calendar is not available separately but is part of every Google Workspace plan, from Business Starter to Enterprise. The plans differ mainly in storage space, video conference participant limits and security features, not in the calendar feature set itself.