Native iOS & Android App + Browser Extensions for scheduling
The open source Calendly alternative. Self host it, or have it hosted. Integrate it seamlessly into your business with advanced customization and an open API.
Cal.com Atoms are React components that allow developers to integrate booking, availability management, event type creation, and calendar integration directly into their apps using OAuth authentication. The public API v2 supports custom integrations with webhooks and 120+ requests per minute rate limits.
Cal.com automatically syncs with Google, Outlook, and Apple calendars to prevent double bookings. Users can set buffers before and after events, define minimum notice periods, and limit daily/weekly/monthly booking frequency to maintain control over their schedule.
Cal.com integrates with Stripe and PayPal to accept payments for bookings. Users can monetize their time by charging for appointments, with payments processed automatically when bookings are confirmed.
Collective events and dynamic group links allow multiple team members to share a single booking page that checks all participants' availability simultaneously. Round-robin scheduling distributes bookings automatically across team members based on availability and priority rules.
Automated SMS and email reminders notify attendees before meetings start. Cal.com sends booking confirmations, reschedule notifications, and follow-up messages to gather pre-meeting information, reducing cancellations and no-shows.