Licensing

Before you begin, make the right license choice.

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Qt is a commercial and open source licensed product developed by The Qt Company, a solely owned entity of Digia Plc, together with the Qt Project under the open source governance model.

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The Qt Backbone
Keeping Qt on Its Feet

A financial backbone is needed to keep Qt development, testing, packaging, releasing, worldwide availability and ultimately, Qt’s greatness, ticking. Over three quarters of the Qt code is generated by The Qt Company and through the sale of commercial licenses Qt is kept on its feet.

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Start Right
Dual-Licensing Options

We believe in giving choice and freedom to developers and companies by offering different licensing options that support a wide variety of product strategies. The result of this is our dual-licensing model – open source and commercial. We want to help you find the license that is right for 1) your development requirements and 2) your deployment needs.

Qt Commercial
License

Qt is available under a commercial license with various pricing models and packages that meet a variety of needs. A Qt commercial license keeps your code proprietary where only you can control and monetize on your end product’s development, user experience and distribution. You also get great perks like additional functionality, world-class support and a close strategic relationship with The Qt Company to make sure your product and development goals are met.

Qt Open Source
Licenses

Qt has been created under the belief of open development and providing freedom and choice to developers. To support that, The Qt Company also licenses Qt under various open source licenses, where some modules are available only under LGPLv2.1, LGPLv2.1 or LGPLv3, and some other modules under LGPLv3 only. In order to preserve the true meaning of open development and uphold the spirit of free software, it is imperative that the rules and regulations of open source licenses required by the GNU are followed. To learn about the GPL, please visit.

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