Jon Udell from Microsoft has been doing some interesting work lately involving iCalendar feeds, their current status, and where they need to go for future acceptance.
Among the libraries he's using to test are:
- iCal4J
- DDay.iCal
- iCalendar.py
- vObject
http://blog.jonudell.net/2009/01/05/icalendar-validation-issues-1-and-2-blank-lines-prodid-and-version/
http://blog.jonudell.net/2009/01/06/icalendar-validation-issue-3-quoted-printable-vs-html/
Sam Ruby has also posted about an iCalendar Validator:
http://intertwingly.net/blog/2009/01/03/iCalendar-Validator
Check these out if you get a few minutes.
-Doug
