The Qt Project is an open collaboration effort to coordinate the development of the Qt software framework. Initially founded by Nokia in 2011, the project is now led by The Qt Company, a subsidiary of Digia since it acquired Qt software technologies, trademarks and personnel from Nokia.
|Founded||21 October 2011|
|Products||Qt, Qt Creator|
|Method||Development and documentation|
|Website||The Qt Company|
Haavard Nord and Eirik Chambe-Eng (the original developers of Qt and the CEO and President, respectively, of Trolltech) began development of "Qt" in 1991, three years before the company was incorporated as Quasar Technologies, then changed the name to Troll Tech and then to Trolltech.
Until version 1.45 the source code of Qt was released under the Qt Free Edition License. This was viewed as not compliant with the open source principle by the Open Source Initiative and the free software definition by Free Software Foundation because, while the source was available, it did not allow the redistribution of modified versions.
Controversy arose around 1998 when it became clear that KDE’s K Desktop Environment was going to become one of the leading desktop environments for Linux. As it was based on Qt, many people in the free software movement worried that an essential piece of one of their major operating systems would be proprietary.
With the release of Qt 2.0, the license was changed to the Q Public License (QPL), a free software license but one regarded by the Free Software Foundation as incompatible with the GPL. A compromise was found between KDE and Trolltech whereby Qt would not be able to fall under a more restrictive license than the QPL, even if Trolltech was bought out or went bankrupt. This led to the creation of the KDE Free Qt Foundation which guarantees that Qt would fall under a BSD-style license should no free/open source version of Qt be released during a period of 12 months.
Qt's Open Governance is modelled after WebKit's.
Aside from the project leader Digia and various individuals, a number of other organizations participate in the Qt Project. Second-largest Qt contributor is KDAB, a Swedish Qt consulting company. KDAB is involved in many areas, including maintenance of several components. KDAB together with RIM/BlackBerry are maintaining the QNX and BlackBerry 10 ports of Qt.
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