Before the launch of the Qt Project, it was 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.

Qt Development Frameworks ( formerly known as Qt Software, Trolltech and as Quasar Technologies ) is an Oslo, Norway-based software company best known for its Qt toolkit and application framework.

On 11 August 2009, the company's name was changed to Qt Development Frameworks.

* Qt Development Frameworks ' homepage

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KDE software is based on the Qt framework.

Qt ( " cute ", or unofficially as Q-T cue-tee ) 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, The Foundry's Nuke, Adobe Photoshop Elements, Skype, VLC media player, VirtualBox, and Mathematica, and by the European Space Agency, DreamWorks, Google, HP, KDE, Lucasfilm, Panasonic, Philips, Samsung, Siemens, Volvo, Walt Disney Animation Studios and Research In Motion.

Distributed under the terms of the GNU Lesser General Public License ( among others ), Qt is free and open source software.

Qt is developed by an open source project, the Qt Project, involving developers as individuals and from firms working to advance Qt, such as Nokia, Digia, and others.

Qt is to replace Nokia's Avkon as the supported UI SDK for developing Symbian applications.

Qt is available under the following copyright licenses:

Its flagship product is Qt, a multi-platform Graphical User Interface ( GUI ) framework written in C ++.

Qt is popular with application developers using C ++ but is supported by bindings for other programming languages too, such as Python.

In 2001 Trolltech introduced Qtopia which is based on Qt.

* Symbian, which is moving towards Qt as the main development framework.

The Q Public License ( QPL ) is a non-copyleft license, created by Trolltech for its free edition of the Qt.

KDE, a desktop environment for Linux, is based on Qt.

Qt Software ( owned by Nokia ) includes the Qt port in the Qt 4. 4 release.

The Canopy Group also at one point, owned a 5. 7 % stake in Trolltech, the company which developed Qt.

It was developed by Qt Software, a subsidiary of Nokia.

* Qt Plug-Ins, part of Nokia Qt framework

On August 9, 2012, Digia acquired Qt software technologies from Nokia.

* Maemo, MeeGo – Qt for Maemo, merged with Moblin to MeeGo ; many applications are already written for Maemo based on the prior Internet tablets ; the Nokia N900 also supports Qt ; the Forum Nokia Wiki has quality-controlled articles supporting Qt development ; mhe Maemo has a development group on Forum Nokia Wiki at Forum Nokia Wiki Maemo.

Since Nokia opened the Qt source code to the community on Gitorious various ports have been appearing.

Nokia sold the commercial licensing business of Qt to Digia PLC on March 2011.

* Nokia N900, a phone with support for Qt built in

He works for Nokia on the Qt graphical widget toolkit and the Qt Creator IDE.

CLX was based on Qt by Nokia.