> >synchronizing chats between clients, > The Carbons XEP is now fairly widely supported and does exactly this I'll add MAM (http://xmpp.org/extensions/xep-03

> >synchronizing chats between clients, > The Carbons XEP is now fairly widely supported and does exactly this I'll add MAM (http://xmpp.org/extensions/xep-0313.html http://xmpp.org/extensions/xep-0313.html) for messages you didn't receive because one of your resources was offline, which Conversations does, along with at least Gajim. > The centralized system of push notifactions on Android and iOS is not yet supported It's coming (http://www.xmpp.org/extensions/xep-0357.html http://www.xmpp.org/extensions/xep-0357.html)