dhtmlxScheduler :: JavaScript Event Calendar

dhtmlxScheduler is an open source, Ajax-enabled event calendar that provides a rich scheduling interface similar to Google Calendar or Outlook Calendar. The calendar offers fast and intuitive user experience with advanced drag-and-drop behavior. Special mobile version with touch support allows you to use a scheduler in mobile web apps. The events in the calendar can be displayed in different views (Day, Week, Month, Year, Agenda, Timeline, etc.). You can also add recurring events, which can be configured on a daily, weekly, monthly or yearly basis.