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A graphical user interface (often called a "GUI") is an interface for programs that uses windows, widgets, buttons etc. instead of using a command line as the interface. Apple and Microsoft made this type of interface popular by including it in their respective operating systems.

Qt

Graphical toolkit developed for Unix Systems. It was originally dual licensed although it is now under an open source licence. It is used in the KDE desktop.

GTK+

A Toolkit that came out of The Gimp project. It gained popularity as an open alternative to Qt. Used to create platform-independent code.

XUL

XML based language used by firefox and other Mozilla products.

See Also

• Command line interface
• Groovy.swing.SwingBuilder
• Dialog box
• Swing

External Links

• Graphical User Interface on Wikipedia.

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