Install kadu by entering the following commands in the terminal:
sudo apt update sudo apt install kadu
Description:
Gadu-Gadu/XMPP client for X11
Gadu-Gadu is a Windows instant messenger, very popular in Poland. Kadu is a Qt5 client of Gadu-Gadu and XMPP for *nix systems. . This package provides Kadu along with plugins developed by Kadu developers.
Homepage: http://kadu.net
Version: 4.1-1.1
Section: universe/net