Hi Ricardo.
Our soon-to-be released Event Aggregator plugin will be able to import from Meetup, Google Calendar, and iCal URLs.
However, there is no true “sync” product.
Our free/core The Events Calendar plugin does have a CSV importer but does not export to CSV. It does, however, generate an iCal URL that can be used in a variety of ways, such as putting Site A’s iCal URL into Site B’s Event Aggregator to pull events in from Site A.
I hope this helps clear up some things for you. Let me know if you have any follow-up questions.