devel.one is shipped with a monitor program that can optionally be run as a plug-in by a NODE.
The monitor is a simple swing frame with a tabbed pane. The individual TAB panels are provided by additional plug-ins. They are attached to the tabbed pane by a message.
The plug-in itself is divided into two plug-ins: An API plug-in and the implementation. The API essentially contains constants and the message definition for registering TABs.