Hubzilla is part of the [[What is the Fediverse? | Fediverse]], so you can't just communicate with other Hubzilla users, but people all over the Fediverse plus some other Networks like e. g. [[What is diaspora*|diaspora*]]. There is also an add-on option for cross posting with a Twitteraccount. Since Hubzilla is like a CMS there are lots of other add-ons you can install for lot of other funktions.<br>