pymucl is a MUC client for telepathy, especially aimed at Maemo 5. There are MUC clients in the repositories but none of them uses the accounts already available on Maemo.
Talkonautâ„¢ is free mobile calling, VoIP enabled, Google Talkâ„¢ like application for your mobile phone.Talkonautâ„¢ supports Jabber
Dt. Microblogging Dienst: SMS, IM/Jabber, RSS, Webinterface