JAM Circle is a Kanban Application Platform on Eclipse RCP.Kanban is similar to sticky note.you can use it for GTD,Planning,Pull System using Kanban.It supports to send Card using XMPP and to define it\'s behavior using Script(JRuby and ECMAScript).
JAM is a MSN Mesenger clone written in Java using the SWT Widget Toolkit. It can be run on top of a JVM or (in a not so far future) in native code compiled with gcj.