The iCalendar module for Python is available from www.mxm.dk/products/public/ical/downloads [1].

You can download the latest build of the Mozilla calendar extension, or of the Sunbird standalone application, from www.mozilla.org/projects/calendar/download.html [2].

The RFC for iCalendar is available at www.ietf.org/rfc/rfc2445.txt [3].

Max M: www.maxm.dk [4]