Software for creating user-customized desktop calendar. This calendar is also a PIM which allows scheduling time easily. Screen Calendar 7.4 supports iCalendar format to let you import events from iCal files to your desktop calendar.
OutlookExport is a Outlook addin that allows users to easily export calendar, contact and email items to various formats.
mical is a minimal iCalendar toolset, comprised of commandline utilities for interacting with other iCalendar implementations.