i made a mistake, i meant to state,
ical, mcal, and ics
ics is not a cal format, its an import/export format only, cal entries are not actually stored in this format.
mcal is not a format that should be supported for much longer, the only major user of this format is the sun messaging system.
when zimbra was being developed, i worked with them on the calendar portion, and the format was chosen based on standards, (ical)
the ical format is now support by MS office (even though their cal entries are stored in a proprietary format (cali, go figure)) but all imports and exports are done via the ics format.
i think that the same should apply to SO,
the format in which the cal entries are stored should be the ical format,
if that happens i can and will submit my various perl scripts that i wrote a long time ago to make them work seamlessly with MS office and OPenOffice.
Please sign in to flag this as inappropriate.