Every Comcast internet customer should have gotten the email. Yes, it's being discontinued in December. Unfortunately, there is no way to sync it with any other calendar app. So you need to start looking for a new calendar to use. There are very much better ones available free from Outlook.com, Google or Yahoo. Mail.com has a nice one too. If you are on a Mac you have iCal available. And I'm sure there's others. I've been using Google Calendar for a long time now, and I would recommend it to anyone.