NextPayge.Social is part of the fediverse and can communicate with other sites services like Mastodon, GNUSocial, Friendica and Others.
The reason we chose Friendica over Mastodon is because Friendica’s goal is to “talk to everyone”. Currently Friendica (and therefore NextPayge Social) can communicate via ActivityPub, Diaspora*, OStatus, Twitter, RSS Feeds and several other protocols. So you don’t need a lot of different tools, software or apps. You can just connect to your information sources and you will see that they appear in your timeline.