Dino is a modern open-source chat client for the desktop. It focuses on providing a clean and reliable Jabber/XMPP experience while having your privacy in mind.
Dino is a very simple and easy to use client. It hasn’t got so many features (esp. advanced ones), but it’s great to start your Jabber adventure. It also supports OMEMO encryption and message archives.
For an Android client, see Conversations.
For a list of other clients, see XMPP Clients.