Spring-integration-ymsg is a project mainly written in Java, it's free.
Spring Integration Support for YMSG (Yahoo Messaging portocol)
spring-integration-ymsg is a library that provide Spring Integration components (specially channel adapters) to connect a program to Yahoo Messaging servers.
Apache License 2.0
Really spring-integration-ymsg is an imitation of spring-integration-xmpp except it uses ymsg protocol instead of xmpp (Jabber protocol).
You have ymsg namespace support with below elements:
We intend that spring-integration-ymsg be part of Spring Integration. IN addition Spring Integration can unify all IM supporters part in somethings like spring-integration-im.
But these are all Spring Integration team choice.
This is a library so there is no installation guide. Just put it in your pom.xml dependencies section.
See associated test cases as sample.