How does Qt licensing work?
Qt for Application Development is dual-licensed under commercial and open source licenses. The commercial Qt license gives you the full rights to create and distribute software on your own terms without any open source license obligations. Qt tools and some libraries are only available under GPL.
Is Qt free for commercial use?
The Qt libraries are available under the GPL or LGPL license. Both licences allow the use of the library for commercial purpose.
Is Qt free and open source?
Yes, it really is free. This is because the Qt Open Source Edition uses the GNU GPL, which forbids the imposition of any license restrictions on software based on the Open Source Edition that would make it non-free.
What does a Qt license cost?
499 USD per year
The Qt Small Business license has all the Qt features for mobile, desktop, and embedded development for 499 USD per year. What is so excellent about this offering is that you can distribute your applications to all our supported platforms (excluding MCUs, which is sold separately).
Do you need a license for Qt?
Yes. You can install Qt and our development tools on five devices per designated users. Our licenses are per individual, so all members of your project team using Qt need to have a commercial license.
How do I get a Qt license?
To purchase a Qt license, visit For further information and assistance about Qt licensing, contact our sales; see for contact details.
Is Qt framework free?
Qt is available under the following free software licenses: GPL 2.0, GPL 3.0, LGPL 3.0 and LGPL 2.1 (with Qt special exception). Note that some modules are available only under a GPL license, which means that applications which link to these modules need to comply with that license.
Do I need a Qt license?
No, you don’t need a commercial Qt license if you don’t distribute your application. If the code you write for this application is owned by your employer and is only provided to your colleagues to assist them in their work duties, then the application is not being distributed according to copyright law.
Where is Qt license?
Purchasing and Sales Information To purchase a Qt license, visit
Is Qt account free?
The successive versions of the agreement drawn between the owners of the commercial version of Qt and the Foundation have ensured that Qt remained free for all developers and added a provision that, if triggered, would entitle KDE to release Qt under a BSD license.
What is a Qt license?
Qt Licensing. Qt licensed under commercial licenses is appropriate for development of proprietary/commercial software where you do not want to share any source code with third parties or otherwise cannot comply with the terms of the GNU LGPL version 3. Qt licensed under the GNU Lesser General Public License…
What is QT program?
The Qt (SDK) software development kit is a portable cross platform application user interface framework which works on the Windows, Linux and Mac OS X operating systems. Qt SDK helps you create graphical user interfaces (GUI’s) for your applications that will run on Windows, Linux and Mac OS X.
What is Qt app?
Qt (pronounced “cute”) is a cross-platform application framework and widget toolkit for creating classic and embedded graphical user interfaces, and applications that run on various software and hardware platforms with little or no change in the underlying codebase, while still being a native application with native capabilities and speed.
What is Qt business?
Businesses rely on Qt Qt is a cross-platform development framework enabling your team to deploy a single codebase providing common APIs across all supported platforms. This results in enormous savings in development and effort.
