Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 54. Chapters: Qt, Allegro library, GNUstep, Microsoft Foundation Class Library, Standard Widget Toolkit, Aqua, List of widget toolkits, GTK+, Swing, PyQt, WxWidgets, Abstract Window Toolkit, Fox toolkit, FLTK, FpGUI, Magic User Interface, OPEN LOOK, TnFOX, Juce, Pluggable look and feel, Ultimate++, ReAction GUI, Windows Forms, Visual Component Framework, Internet Foundation Classes, PHP-GTK, Synth Look and Feel, Layout manager, XVT, IUP, JX Application Framework, JVx, CEGUI, Lightweight User Interface Toolkit, SunView, Open Motif, LessTif, SmartWin++, Java-gnome, QtCurve, Dialog, Tkinter, XView, PowerPlant, TouchToolkit, Fudgets, BOOPSI, Harmony, QGtkStyle, List of toolkits, InterViews, Zinc Application Framework, MetaCard, Xaw, OLIT, GTK-Qt. Excerpt: Qt (pronounced officially as cute, though often incorrectly as Q.T. ) is a cross-platform application framework that is widely used for developing application software with a graphical user interface (GUI) (in which cases Qt is classified as a widget toolkit), and also used for developing non-GUI programs such as command-line tools and consoles for servers. Qt is most notably used in Autodesk Maya, Google Earth, KDE, Adobe Photoshop Elements, OPIE, Skype, VLC media player, VirtualBox, and Mathematica, and by the European Space Agency, Siemens, Volvo, Walt Disney Animation Studios, Samsung, Philips, and Panasonic. It is currently produced by Nokia's Qt Development Frameworks division, which came into being after Nokia's acquisition of the Norwegian company Trolltech, the original producer of Qt. Nokia announced that it is going to drop Symbian technologies and base their future smartphones on Microsoft platform instead in February 2011. One month later Nokia announced the sale of Qt's commercial licensing and professional services to Digia PLC, although Nokia will remain the main de...