- Mozilla Sunbird
  - Created Calendar here ....
  - Can publish iCalendar (.ics) to WebDAV resource via https
  - Can export Calendar in HTML format

- Mozilla Thunderbird
  - Using its AddressBook ...
  - Can export LDIF and csv format

- Outlook Express 6:
  - Can import address data from ".ldif" files

- Outlook 2000
  - Can import iCalendar (.ics) and vCalendar (.vcs)
  - Can import csv format (user has to do column mapping on its own)