This a simple calendar of events/calendaring product. It makes use of the CalendarTag http://www.zope.org/Members/jdavid/Calendar.

Demo at my site

Features:-

-provides events scheduling
-if a start date and end date is entered, the range will be updated/inserted.
However, to stop unneccessary DOS, only a 30 day range is allowed.
-easy interface to Calendar properties/attributes via form
-provides anonymous posting/authenticated posting
-Public and private events.  Private events will only be seen by the user who posted it.
-with authenticated posting, authorized user will be able to edit his posts
-generic (i.e simplistic) enough to use any rdb.  tested with Gadfly and postgres
-customization (cosmetic/sql queries) easily done.