The top three calendar applications available today Google calendar and Microsoft Outlooks Calendar stand out above the rest. Most of the more popular apps include calendar support, tasks, notifications and reminders.
Integrate your Web & Mobile App with Google Calendar
You can use a calendaring integration service within Amazon AWS that supports scheduling deleting, viewing and listing meetings and calendar appointments through one or multiple inboxes using both a graphical user interface and Java/REST API calls. Amazon Work-mail provides users with a safe business email and calendar service that has an endpoint for Exchange Web Services.