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.
Squires is a Python library which simplifies the creation of powerful self-documenting readline-based command line interfaces. Scripts using Squires have the following features in their interface: full readline bindings, tab completion of commands and their options, inline command help (which is accessed by pressing tab), option syntax validation, and hidden commands and options.
Google Gadgets for Linux provides a platform for running Google Gadgets under Linux, catering to the unique needs of Linux users. It's compatible with the gadgets written for Google Desktop for Windows as well as the Universal Gadgets on iGoogle. There are two main components to the application: one is a common gadget library responsible for running and presenting a gadget, and the other is a host program that allows the user to choose gadgets and run them on the desktop. Currently it has hosts written for GTK+ and Qt, with the GTK+ host offering a sidebar similiar to that of Google Desktop for Windows.
Naked Objects is an application development platform. It's called Naked Objects because all you need to develop are your domain objects; the Naked Objects platform automatically creates an object-oriented user interface (giving you the choice of different styles) and the underlying storage mechanism (again, giving you the choice as how to persist your objects).
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.
XWidglets is a complete rich Java Swing tool for designing, creating, and using XML-based GUIs. It provides a lightweight XML client, clear separation between view, data, and process, MVC I and II support, event management, a consistent look and feel across platforms, a rich set of GUI components, and n-tier architecture integration.