Cheogram

Chat on the Jabber network (XMPP protocol); focus on features for gateway usersGPL-3.0-only

aTalk

XMPP/Jabber client with encrypted instant messaging and video callsApache-2.0

Conversations

Encrypted, easy-to-use XMPP instant messenger for your mobile deviceGPL-3.0-only

another.im

Yet Another Conversations fork but...GPL-3.0-only