Easy!Appointments - Open Source Appointment Scheduler

Easy!Appointments is a highly customizable web application that allows customers to book appointments with you via a sophisticated web interface. Moreover, it provides the ability to sync your data with Google Calendar so you can use them with other services. Easy!Appointments will run smoothly with your existing website as it can be installed in a single folder of the server and of course share an existing database.

Its features include:

• Customers and appointments management.
• Services and providers organization.
• Working plan and booking rules.
• Google Calendar synchronization.
• Email notifications system.
• Self hosted installation.
• Translated user interface.
• User community support.