xJBot is an extensible MSN Bot library written in Java which builds upon JML (Java MSN Messenger Library).
YAJT is achronim of Yet Another JSON Toolkit, is a 100% pure Java library set for manipulating data in the JSON format. Contained features: a parser generated by an ANTLR grammar, an "JSON query path" processor generated by an ANTLR grammar and more
One of the project groups in Intake 6 is planning on doing a IM client which is secure. This includes messenging, file sending, picture drawing, video transmissions by far.