Morcego is a 3D graph browser for viewing and navigating any graph-like structure. Examples of such structures include social networks, site maps, hierarchies, and genealogy trees. It currently only support simple graphs. It's already integrated into TikiWiki. Morcego is not meant to provide a solution for the end user, but to be embedded in a Web application by developers. It's a Java applet that communicates with an XML-RPC server to load the graph that is displayed.
The Sanaware Java Docking library allows developers to easily manage dynamic dragging of Swing components. Static applications can be turned into flexible environments that users can tune to their needs and preferences. The library provides all the necessary components, ranging from simple draggable buttons in toolbars all the way to multiple floating frames in complex layouts.
WidgetServer is a Java/XML server-side GUI-framework which enables an application to run as either a monolithic Swing app, a client/server Swing app, or as a Web app without any change and without loss of functionality. An Eclipse Plugin is available as well. A rich widget set is supported that includes tree views, tabbed panes, split panels, and much more. Animations, all types of events, and several effects are supported, as well. A unified widget-based, object-oriented programming interface for Web and Swing GUIs is offered to the developer to control and assemble the GUI. Web applications are fully AJAX enabled. For Swing client/server applications, the framework handles client/server communication, including compression and security layers.
Flying Saucer is a pure Java XML/CSS 2 renderer whose aim is to provide spec-compliant CSS 2.1 rendering for any well-formed XML document. The current codebase can render to Java2D-based canvases (Swing panels), PDF via the iText library, and images. The library currently covers the greater part of the CSS 2.1 specification.
JGraph Layout Pro is a high performance graph layout library for JGraph that automatically positions your graph, diagram, or network in a visually pleasing manner. Layout Pro provides flexibility and a simple design, enabling you to use circular, tree, force-directed, and hierarchical layouts with ease. Example uses are organisational charts, workflow and process diagrams, call charts, network diagrams, UML tools, and more. It comes with its own documentation and an example applet.
JewelCLI provides an API to parse command line arguments. It uses Java annotations to present a very simple but powerful interface. Options are defined using an annotated Java interface definition. This allow a declarative style which can be much clearer than the procedural style used by some other Java CLI libraries.
SuperWaba is a VM for PDAs. Because of the way it was written, you can use Java to develop programs for it. It supports exceptions, threads, many user interface controls, double and long 64-bit types, grayscale, color, 3D controls, and JNI and Java libraries, among other features. The project has been superseded and replaced with TotalCross.