Online calendar

An online calendar is a web application that allow one or more users to edit, and optionally share with other users, online access to a calendar.

Features may include:

• Drag and drop functions for creating events
• Support for recurring daily, weekly, monthly and yearly events
• Viewing by day, week or month
• Multiple calendar support
• Multiple language support
• Ability to work with different browsers, such as Firefox, Google Chrome, Safari and Internet Explorer
• Email notification
• Mobile version

Online calendars that are free to use include Google Calendar, Dayhaps Calendar, Yahoo Calendar, DayViewer Online Calendar, Microsoft's Calendar service, and others.