dotCal - Calendar Publishing for Business, Individuals, and Social Media
Synchronize calendars across different platforms
Any calendar you create, use at work, use at home, subscribe to, filter, or “mashup” on dotCal can be easily sychrionized (2-Ways) with other calendars, but those other calendar programs must support modern CalDav standards.
Many of today's calendars do this such as Apple iCal, Google Calendar, Yahoo Calendar, Thunderbird, and many more as well. Microsoft Outlook 2003 and 2007 require an add-on for 2-way sync. We'll see what they do next version.
By simply sending your friends and family the required CalDav “dotCalConnect” information, your family and friends may be able to directly use their current Desktop & Webtop calendars, or dotCal, to fully sychronize with the calendars you selectively make available to them.
What a way to CAL-municate!!