Adium is a free and open source instant messaging client for macOS that supports multiple IM networks including XMPP/Jabber.
Adium users can connect to the KodeNet XMPP/Jabber network with these simple steps.
The XMPP/Jabber account should now show Online.
By default newly connected accounts will see a Support contact in the roster list. This contact is not required to have and can be removed or re-added at anytime. This contact is simply available for questions and assistance.