Gajim is described as 'The goal of Gajim is to provide a full featured and easy to use XMPP client. Gajim works nicely with GNOME, but does not require it to run. It is released under the GNU General Public License' and is a popular instant messenger in the social & communications category. There are more than 50 alternatives to Gajim for a variety of platforms, including Mac, Linux, Windows, Android and iPhone apps. The best Gajim alternative is Matrix, which is both free and Open Source. Other great apps like Gajim are Pidgin, Conversations, Adium and Trillian.