AMI is a universal P2P framework written in Java
and XML. It allows people to communicate using
plug-in AMI protocols. It can support any P2P
protocol.
Jajuk is a multi-platform music organizer. The main goal is to provide a fully-featured application to advanced users with large or scattered music collections. It supports most audio formats.
QDWizard (Quick and Dirty Java Wizard) is a simple
framework to create Swing wizards. It supports
complex branching, i18n, errors, and requires only
a few minutes to learn and use.