No specific info about version 3.0. Please visit the main page of KakaoTalk on Mac Informer.
Adium is a popular and, probably, the best instant messaging client for you Mac.
This is a messenger app based on the MTProto protocol.
Tor Messenger--based on Instantbird...
The ippi Messenger software allows you to call with your ippi account
Chromeless & frameless window wrapper around the Facebook Messenger app.