Jeff Thompson has designed and implemented the org.moyoman.clients.reference.Moyoman client. He is responsible for this software, so you can send any bug reports or fixes with him, and talk with him about submitting any enhancements.
It is also perfectly acceptable to write another client from scratch, instead of working on the existing org.moyoman.clients.reference.Moyoman application. If your application is written in Java, then you may add it to the cvs tree under org.moyoman.clients. If it is written in another language, it is probably best to start your own Sourceforge project for that client, but it could probably be added to the cvs tree for Moyoman if desired.