Appointly: Appointment Booking is a powerful booking software for Shopify that allows merchants to easily sell services and schedule appointments. With Appointly, you can convert any product into a bookable service in just three simple steps. The app offers flexible setup options such as calendar integrations, custom questions, and group events. Additionally, you can add your staff as team members to handle multiple bookings, and even connect Google or Outlook calendars for two-way synchronization. Appointly also supports online meetings through Zoom integration, and offers features like appointment cancellation and rescheduling without manual intervention, as well as the ability to take deposits and partial payments for appointments.