Qt
Build cross-platform software faster with Qt Framework's powerful libraries and APIs
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Qt Framework is a comprehensive set of libraries and APIs designed to streamline software development. It offers flexible UI components, core functionality, and cross-platform scalability, enabling developers to create reliable and maintainable applications efficiently. With support for multiple languages and platforms, Qt Framework reduces complexity and accelerates time-to-market.
Preguntas frecuentes
The free evaluation period for Qt commercial products is 10 days, which can be extended by Qt Sales. During this period, you can use all product features but not for production or actual product development.
No, you cannot switch from Qt open source to a commercial license without written consent from The Qt Company. If you have already started development with the Qt Community Edition, you should contact The Qt Company to resolve the issue.
You can buy Qt licenses directly from the online store at https://www.qt.io/pricing. For Distribution Licenses or other products, you can purchase them through a sales representative or a reselling partner.
Qt's open source license provides four primary freedoms: the freedom to run the program for any purpose, study and adapt it, redistribute copies, and improve and release improvements to the public. These freedoms are non-negotiable and must be passed to users.
Term licenses are legacy license types sold in 2018 and 2019. Current commercial licenses are 'Subscription' licenses, which offer improved terms and access to Qt 6. For details on legacy licenses, visit https://www.qt.io/terms-conditions/legacy-disclaimers.
Using Qt under the open source license requires compliance with the (L)GPL, including obligations and restrictions. If you cannot or do not intend to comply with these rules, you should consider a commercial license.
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