Install jabberd2 by entering the following commands in the terminal:
sudo apt update sudo apt install jabberd2
Description:
Jabber instant messenger server
Jabber is a free instant messaging server based on XMPP. . This package contains Jabberd 2, the next generation of the Jabberd server. It has been rewritten from the ground up to be scalable, architecturally sound, and to support the latest protocol extensions coming out of the XSF.
Homepage: http://jabberd2.org/
Version: 2.6.1-3build1
Section: universe/net