Kaidan
Kaidan, a simple and user-friendly Jabber/XMPP client for every device and platform
Kaidan Developers & Contributors
Kaidan is a simple, user-friendly Jabber/XMPP client providing a modern user-interface using Kirigami and QtQuick. The back-end of Kaidan is entirely written in C++ using the qxmpp XMPP client library and Qt 5.
Kaidan is not finished yet, so don’t expect it working as well as a finished client will do.
For a list of supported XEPs, have a look at the Wiki.