Name: FullCalendar

Description: Most users find developing their own calendar UI not that quite easy but with jQuery FullCalendar you make it easy and fast!

Some of Specifications:

• Google Calendar Interation
• ajax, json, and array data source
• Event Handlers refetchEvents, removeEvents, renderEvent and many more
• Draggable and Resizeable

Demo: http://arshaw.com/fullcalendar/

Download: http://arshaw.com/fullcalendar/download/