http://en.wikipedia.org/wiki/Zephyr_(protocol)
Does there exist a Java library or some sort of Java implementation of the Zephyr protocol? I've tried using Google but haven't managed to find anything.
I guess I'm going to have to port it from barnowl/pidgin/adium or write an implementation from scratch if I don't manage to find anything.
Zephyr has been replaced by XMPP, which has a couple good Java implementations available. If you really need Zephyr I think you are right: you'll need to write your own library.