Qt Extended (named Qtopia before September 30, 2008) is an application

platform Platform may refer to: Technology * Computing platform, a framework on which applications may be run * Platform game, a genre of video games * Car platform, a set of components shared by several vehicle models * Weapons platform, a system ...

for

embedded Linux Operating systems based on the Linux kernel are used in embedded systems such as consumer electronics (eg. set-top boxes, smart TVs and personal video recorders (PVRs)), in-vehicle infotainment (IVI), networking equipment (such as routers, switc ...

-based mobile computing devices such as

personal digital assistant A personal digital assistant (PDA), also known as a handheld PC, is a variety mobile device which functions as a personal information manager. PDAs have been mostly displaced by the widespread adoption of highly capable smartphones, in part ...

video projector A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp), ...

s and

mobile phone A mobile phone, cellular phone, cell phone, cellphone, handphone, hand phone or pocket phone, sometimes shortened to simply mobile, cell, or just phone, is a portable telephone that can make and receive telephone call, calls over a radio freq ...

s. It was initially developed by

Qt Software QT or Qt may refer to: Arts and media * QT (musician) (born 1988), pop singer * '' QT: QueerTelevision'', an LGBT newsmagazine which aired on Canada's CityTV in the 1990s * Quentin Tarantino (born 1963), American filmmaker * ''Question Time'' (T ...

, a subsidiary of

Nokia Nokia Corporation (natively Nokia Oyj, referred to as Nokia) is a Finnish multinational telecommunications, information technology, and consumer electronics corporation, established in 1865. Nokia's main headquarters are in Espoo, Finlan ...

. When they cancelled the project the

free software Free software or libre software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions. Free software is a matter of liberty, ...

portion of it was forked by the community and given the name Qt Extended Improved. The QtMoko

Debian Debian (), also known as Debian GNU/Linux, is a Linux distribution composed of free and open-source software, developed by the community-supported Debian Project, which was established by Ian Murdock on August 16, 1993. The first version of De ...

-based distribution is the natural successor to these projects as continued by the efforts of the Openmoko community.

Features

Qt Extended features: *

Windowing system In computing, a windowing system (or window system) is software that manages separately different parts of display screens. It is a type of graphical user interface (GUI) which implements the WIMP (windows, icons, menus, pointer) paradigm for ...

* Synchronization framework *

Integrated development environment An integrated development environment (IDE) is a software application that provides comprehensive facilities to computer programmers for software development. An IDE normally consists of at least a source code editor, build automation tools a ...

Internationalization and localization In computing, internationalization and localization ( American) or internationalisation and localisation (British English), often abbreviated i18n and L10n, are means of adapting computer software to different languages, regional peculiarities an ...

support *

Game A game is a structured form of play, usually undertaken for entertainment or fun, and sometimes used as an educational tool. Many games are also considered to be work (such as professional players of spectator sports or games) or art (su ...

s and

multimedia Multimedia is a form of communication that uses a combination of different content forms such as text, audio, images, animations, or video into a single interactive presentation, in contrast to tradi ...

Personal information manager A personal information manager (often referred to as a PIM tool or, more simply, a PIM) is a type of application software that functions as a personal organizer. The acronym PIM is now, more commonly, used in reference to personal information manag ...

applications * Full screen

handwriting Handwriting is the writing done with a writing instrument, such as a pen or pencil, in the hand. Handwriting includes both printing and cursive styles and is separate from formal calligraphy or typeface A typeface (or font family) is ...

Input method An input method (or input method editor, commonly abbreviated IME) is an operating system component or program that enables users to generate characters not natively available on their input devices by using sequences of characters (or mouse ...

s *

Personalization Personalization (broadly known as customization) consists of tailoring a service or a product to accommodate specific individuals, sometimes tied to groups or segments of individuals. A wide variety of organizations use personalization to improv ...

options *

Productivity Productivity is the efficiency of production of goods or services expressed by some measure. Measurements of productivity are often expressed as a ratio of an aggregate output to a single input or an aggregate input used in a production proce ...

applications *

Internet The Internet (or internet) is the global system of interconnected computer networks that uses the Internet protocol suite (TCP/IP) to communicate between networks and devices. It is a ''internetworking, network of networks'' that consists ...

applications *

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mo ...

integration *

Wireless Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The mos ...

support Qt Extended is

dual license Multi-licensing is the practice of distributing software under two or more different sets of terms and conditions. This may mean multiple different software licenses or sets of licenses. Prefixes may be used to indicate the number of licenses ...

d under the

GNU General Public License The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end user In product development, an end user (sometimes end-user) is a person who ultimately uses or is intended to ulti ...

(GPL) and proprietary licenses.

Devices and deployment

As of 2006, Qtopia was running on several million devices, including 11 mobile phone models and 30 other

handheld A mobile device (or handheld computer) is a computer small enough to hold and operate in the hand. Mobile devices typically have a flat LCD or OLED screen, a touchscreen interface, and digital or physical buttons. They may also have a physical ...

devices. Models included the

Sharp Corporation is a Japanese multinational corporation that designs and manufactures electronic products, headquartered in Sakai-ku, Sakai, Osaka Prefecture. Since 2016 it has been majority owned by the Taiwan-based Foxconn Group. Sharp employs more tha ...

Zaurus line of Linux handhelds, the Sony mylo, the

Archos Archos (, stylized as ARCHOS) is a French multinational electronics company that was established in 1988 by Henri Crohas. Archos manufactures tablets, smartphones, portable media players and portable data storage devices. The name is an anagra ...

Portable Media Assistant (PMA430) (a multimedia device), the GamePark Holdings GP2X,

Greenphone The Greenphone was a smartphone developed by Trolltech with Qtopia Phone Edition, a GUI and application platform embedded in Linux using mostly free and open source software. The proprietary software on the phone includes the communications sta ...

(an open phone initiative),

Pocket PC A Pocket PC (P/PC, PPC) is a class of personal digital assistant (PDA) that runs the Windows Mobile or Windows Embedded Compact operating system that has some of the abilities of modern desktop PCs. The name was introduced by Microsoft in 200 ...

, FIC Openmoko phones:

Neo 1973 Openmoko is a discontinued project to create a family of open source mobile phones, including the hardware specification, the operating system ( Openmoko Linux), and actual smartphone development implementation like the Neo 1973 and Neo FreeRun ...

and FreeRunner. An unofficial

hack Hack may refer to: Arts, entertainment, and media Games * ''Hack'' (Unix video game), a 1984 roguelike video game * ''.hack'' (video game series), a series of video games by the multimedia franchise ''.hack'' Music * ''Hack'' (album), a 199 ...

allows its use on the Archos wifi series of

portable media player A portable media player (PMP) (also including the related digital audio player (DAP)) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored ...

s (PMP) 604, 605, 705, and also on several Motorola phones such as E2, Z6 and A1200. The U980 of ZTE is the last phone running it.

Software development

Native applications could be developed and compiled using C++. Managed applications could be developed in Java.

Discontinuation

On March 3, 2009, Qt Software announced the discontinuation of Qt Extended as a standalone product, with some features integrated on the Qt Framework.

Qt Extended Improved

The Openmoko community has forked the final stable release into Qt Extended Improved (later renamed to QtMoko) which, like its predecessor, is an application

for

-based mobile computing devices such as

s and

d under the

(GPL) and proprietary licenses. Qt Extended Improved can run on several mobile devices, most notably the Openmoko phones:

and FreeRunner.

Other mobile operating systems

Access Linux Platform The Access Linux Platform (ALP) is a discontinued open-source software based operating system, once referred to as a "next-generation version of the Palm OS," for mobile devices developed and marketed by Access Co., of Tokyo, Japan. The platform ...

Android Android may refer to: Science and technology * Android (robot), a humanoid robot or synthetic organism designed to imitate a human * Android (operating system), Google's mobile operating system ** Bugdroid, a Google mascot sometimes referred to ...

* iOS *

MeeGo MeeGo is a discontinued Linux distribution hosted by the Linux Foundation, using source code from the operating systems Moblin (produced by Intel) and Maemo (produced by Nokia). Primarily targeted at mobile devices and information appliances ...

* Nucleus RTOS * Openmoko Linux * Palm

webOS webOS, also known as LG webOS and previously known as Open webOS, HP webOS and Palm webOS, is a Linux kernel-based multitasking operating system for smart devices such as smart TVs that has also been used as a mobile operating system. Initiall ...

Symbian Symbian is a discontinued mobile operating system (OS) and computing platform designed for smartphones. It was originally developed as a proprietary software OS for personal digital assistants in 1998 by the Symbian Ltd. consortium. Symbian ...

Tizen Tizen () is a Linux-based mobile operating system backed by the Linux Foundation, mainly developed and used primarily by Samsung Electronics. The project was originally conceived as an HTML5-based platform for mobile devices to succeed MeeGo ...

Windows Mobile Windows Mobile is a discontinued family of mobile operating systems developed by Microsoft for smartphones and personal digital assistants. Its origin dated back to Windows CE in 1996, though Windows Mobile itself first appeared in 2000 as Pock ...

References

External links

Qt Extended Whitepaper
from Qt Software * {{Linux Embedded Linux Mobile Linux Mobile software Openmoko Personal digital assistant software Software forks Software that uses Qt