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There’s many different types of documents to pick from from spreadsheets to word docs. Chat For chat, it’s your choice between: a) XMPP w/ audio calls (Snikket) b) Matrix w/ audio calls (+$30) c) SimpleX server w/ audio calls d) Tor Onion XMPP (without audio, just text) (+$100) This is the Snikket XMPP web panel: Here you can add accounts for your friends or family.