Flex Interactive Calendar
At work I was asked start development on a new flex calender application that will live on a central server. I am making it as a web app, air app, facebook app, and possibly a mobile phone app, but I am unsure how flex applications will perform on mobile devices.
In the past I have used Quietly Scheming's Flex Interactive Calendar Component. It's initial application was to be used with google calendars or anything in the hcal/ical format. The great thing about expanding this application is that once you see how the calendar handles the data, its quite easy to write your own method for creating CalendarEvent and populating the calendar.
The comments on his webpage ended about a year ago, and I don't believe he has updated the code in quite a bit. Regardless, when you google "flex calendar", this application is generally number 1 or close to it.
Well done indeed.