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Get Qt

With Qt, you can reach all your target platforms – desktop & embedded – with one technology and one codebase, minimizing your time-to-market and maintenance burden. Qt is available under a dual-licensing model — you choose what’s right for your needs.
Available platforms:

Windows & Universal Windows Platform | Linux | Embedded Linux | Android | macOS | iOS | QNX | INTEGRITY | VxWorks

If you are a commercial customer or an active evaluator, you can find your downloads either via the Qt Account portal or through the Maintenance tool in your Qt installation directory.

 

Commercial

Free trial

Commercial licensing

Rights & Obligations - Commercial rights to protect your code

A commercial license keeps your code proprietary where only you can control and monetize on your end product’s development, user experience and distribution – securing your intellectual property.

  • Application privacy with static & dynamic linking of Qt libraries
  • No need to provide a license copy or explicitly acknowledge Qt usage
  • No need to make a copy of your Qt source code available for customers
  • Full rights to proprietary Qt source code modifications
  • Can make “closed” consumer devices
  • Enforceable Digital Rights Management and enforceable software patents

Qt ships with third party open source components that might require respective licensing compliancy, if used. See details of other licenses inside Qt.
What you get
Essentials

These are the APIs and libraries that provide the backbone of Qt. Qt contains a rich set of fundamental enablers,which provide higher-level UI and application development components. 

  • Data storage
    • Qt SQL
    • Qt Core - JSON classes
  • Internationalization
    Internationalization
  • Multimedia
    • Qt Multimedia
    • Qt Multimedia Widgets
  • Networking & Connectivity
    Qt Network
  • Qt Core
    Qt Core
  • Testing framework
    Qt Test
  • UI technologies
    • Qt GUI
    • Qt Widgets
    • Qt QML
    • Qt Quick
    • Qt Quick Controls
    • Qt Quick Dialogs
    • Qt Quick Layouts
Additional features

Qt is an unbelievably comprehensive framework full of features beyond the essentials. 

  • 3D/2D graphics & image processing
    • Qt Canvas 3D
    • Qt 3D
    • Qt SVG
    • Qt Image Formats
    • Qt Graphical Effects
  • Data storage
    Qt XML
  • Data visualization
    • Qt Data Viz
    • Qt Charts
  • Mobility & mapping
    • Qt Purchasing
    • Qt Positioning
    • Qt Location
  • Networking & Connectivity
    • Qt Serial port
    • Qt Serial Bus
    • Qt NFC
    • Qt Bluetooth
    • Qt Sensors
  • Platform Extras
    • Qt D-Bus
    • QAxContainer
    • QAxServer
    • Qt Android Extras
    • Qt Mac Extras
    • Qt Windows Extras
    • Qt X11 Extras
  • Qt Concurrent (Multi-threading)
    Qt Concurrent (Multi-threading)
  • SCXML state machine
    Qt SCXML
  • UI technologies
    • Qt 3D Studio runtime (GPL only)
    • Qt Quick Controls 2
    • Qt Quick Extras
    • Qt Quick Widgets
  • Wayland Compositor
    Qt Wayland Compositor
  • Web technologies
    • Qt Web Engine (LGPL only)
    • Qt Web Channel
    • Qt Web Sockets
    • Qt WebGL
    • Qt Web View
Tools

Qt has it's own cross-platform IDE and is chock-full of tools designed for developing applications and UIs once and deploying them across multiple operating systems.  

  • Qt Creator IDE & tools
    • IDE
    • Profiling & performance analyzers
    • Unit testing tools
    • Debugging tools
    • Emulator
  • Integrated tooling
    • qmake
    • Qt Linguist
    • Qt Assistant
  • UI design tools
    • Qt Designer
    • Qt 3D Studio
    • Qt Quick Designer
  • SCXML State chart editor
    Visual state machine editor with SCXML support
  • Qt VS Tools
    Microsoft Visual Studio Integration (VSI)
Embedded tooling & solutions

Qt has ready-made solutions that speed up your device creation with enterprise-quality features for a truly professional development experience. 

  • Direct on-device debugging
  • One-click deployment
    One-click deployment to embedded targets
  • Qt Virtual Keyboard 
  • Reference software stack & SDK
    Pre-built 'Boot to Qt' software stack based on embedded Linux and built using Yocto Project tooling. Runs on a variety of supported hardware.
  • Qt "Lite" Configuration tool
    Allows browsing & selecting of features that will be included in you build configuration.
  • Real-time operating system (RTOS) support for VxWorks

Available upon request. 
Official Qt Support Helpdesk

The Qt Company’s expert support team helps you solve your development challenges.

  • Support Center access via customer portal
  • Support for Qt Tools and pre-built versions of Qt
  • Support for source code builds of Qt

Not included with the commercial “Start-up” license.
Close strategic relationship with The Qt Company
  • Commercial customers get direct contact with the company responsible for Qt development and productization.
  • Dedicated Qt customer success manager who is there to ensure your embedded development project’s success
  • Priority access to Qt R&D
  • Increased visibility & priority for reported bugs
  • Bug fixing or workarounds (within reasonable efforts, not every bug is fixable as part of Qt Support)

Free trial with commercial licensing.
No credit card required.
Try free

Open Source

Free under (L)GPL v3 license obligations

Commercial Licensing

Rights & Obligations - An obligation to share your Qt software code

Open source usage of Qt is free as in “free speech”. As a Free Software user you contribute or “pay” to our open source project by making your code available to others – ensuring the end-users’ rights.

  • Must provide a relinking mechanism for Qt libraries
  • Must provide a license copy & explicitly acknowledge Qt usage
  • Must make a Qt source code copy available for customers
  • Qt source code modifications aren’t proprietary
  • Must make “open” consumer devices
  • For Digital Rights Management please see: FAQ

    Does GPLv3 prohibit DRM?

    It does not; you can use code released under GPLv3 to develop any kind of DRM technology you like. However, if you do this, section 3 says that the system will not count as an effective technological “protection” measure, which means that if someone breaks the DRM, she will be free to distribute her software too, unhindered by the DMCA and similar laws."

    Click to go to the GNU (L)GPL FAQ.
  • Special consideration should be taken when attempting to enforce software patents  FAQ

    From FAQ: Does GPLv3 have a patent retaliation clause?

    In effect, yes. Section 10 prohibits people who convey the software from filing patent suits against other licensees. If someone did so anyway, section 8 explains how they would lose their license and any patent licenses that accompanied it.

    Click to go to the GNU (L)GPL FAQ.

Depending on your choice of GPL or LGPL these obligations differ. The primary open-source license is the GNU Lesser General Public License v.3 (“LGPL”). Also, please note that there are parts of Qt that are only provided under GPL for open source users where additional obligations need to be met.

Learn more about your obligations when using the open source packages.
What you get
Essentials

These are the APIs and libraries that provide the backbone of Qt. Qt contains a rich set of fundamental enablers, which provide higher-level UI and application development components.

  • Data storage
    • Qt SQL
    • Qt Core - JSON classes
  • Internationalization
    Internationalization
  • Multimedia
    • Qt Multimedia
    • Qt Multimedia Widgets
  • Networking & Connectivity
    Qt Network
  • Qt Core
    Qt Core
  • Testing framework
    Qt Test
  • UI technologies
    • Qt GUI
    • Qt Widgets
    • Qt QML
    • Qt Quick
    • Qt Quick Controls
    • Qt Quick Dialogs
    • Qt Quick Layouts
Additional features

Qt is an unbelievably comprehensive framework full of features beyond the essentials. Some features are limited to GPL.

  • 3D/2D graphics & image processing
    • Qt Canvas 3D
    • Qt 3D
    • Qt SVG
    • Qt Image Formats
    • Qt Graphical Effects
  • Data storage
    Qt XML
  • Data visualization
    Limited to GPL use only.
    • Qt Data Visualization
    • Qt Charts
  • Mobility & mapping
    • Qt Purchasing
    • Qt Positioning
    • Qt Location
  • Networking & Connectivity
    • Qt Serial port
    • Qt Serial Bus
    • Qt NFC
    • Qt Bluetooth
    • Qt Sensors
  • Platform Extras
    • Qt D-Bus
    • QAxContainer
    • QAxServer
    • Qt Android Extras
    • Qt Mac Extras
    • Qt Windows Extras
    • Qt X11 Extras
  • Qt Concurrent (Multi-threading)
    Qt Concurrent (Multi-threading)
  • SCXML state machine
    Qt SCXML
  • UI technologies
    • Qt 3D Studio runtime (under GPL only)
    • Qt Quick Controls 2
    • Qt Quick Extras
    • Qt Quick Widgets
  • Wayland Compositor
    Qt Wayland Compositor
  • Web technologies
    • Qt Web Engine (under LGPL only)
    • Qt Web Channel
    • Qt Web Sockets
    • Qt WebGL
    • Qt Web View
Tools

Qt has it's own cross-platform IDE and is chock-full of tools designed for developing applications and UIs once and deploying them across multiple operating systems.

  • Qt Creator IDE & tools
    Limited to GPL only.
    • IDE
    • Profiling & performance analyzers
    • Unit testing tools
    • Debugging tools
    • Emulator
  • Integrated tooling
    Limted to GPL only.
    • qmake
    • Qt Linguist
    • Qt Assistant
  • UI design tools
    Limted to GPL only.
    • Qt Designer
    • Qt 3D Studio
    • Qt Quick Designer
  • SCXML State chart editor

    Limted to GPL only.

    • Visual state machine editor with SCXML support
  • Qt VS Tools

    Limted to GPL only.

    • Microsoft Visual Studio Integration (VSI)
Embedded tooling & solutions

Qt has ready-made solutions that speed up your device creation with enterprise-quality features for a truly professional development experience. 

  • Direct on-device debugging
  • One-click deployment
    One-click deployment to embedded targets
  • Qt Virtual Keyboard 
    Only available under GPL.
  • Reference software stack & SDK
    Pre-built 'Boot to Qt' software stack based on embedded Linux and built using Yocto Project tooling. Runs on a variety of supported hardware.
  • Qt "Lite" Configuration tool
    Allows browsing & selecting of features that will be included in you build configuration.
  • Real-time operating system (RTOS) support for VxWorks*
* RTOS support under both commercial and open source is only available for QNX and INTEGRITY.
Official Qt Support Helpdesk

The Qt Company’s expert support team helps you solve your development challenges.

  • Support Center access via customer portal
  • Support for Qt Tools and pre-built versions of Qt
  • Support for source code builds of Qt
Close strategic relationship with The Qt Company
  • Commercial customers get direct contact with the company responsible for Qt development and productization.
  • Dedicated Qt customer success manager who is there to ensure your embedded development project’s success
  • Priority access to Qt R&D
  • Increased visibility & priority for reported bugs
  • Bug fixing or workarounds (within reasonable efforts, not every bug is fixable as part of Qt Support)

When developing with Qt Open Source, we stress that you should be aware of the terms of the (L)GPL and your legal obligations. 
Go open source

Your Open Source Obligations

(L)GPL has been chosen as the primary open-source license for Qt, because it provides your end users' the following Free Software "four degrees of freedom":

  • To redistribute copies of your or their version of your program, so they can help their "neighbor".
  • To distribute copies of their modified versions of your program to others. By doing this they can give the whole community a chance to benefit from their changes. Access to the source code is a precondition for this.
  • To run the program as they wish, for any purpose.
  • To study how the program works, and change it so it does their computing as they wish. Access to the source code is a precondition for this.

All users of Qt under (L)GPL must adhere to this and fully meet all the requirements set by the (L)GPL. It is recommended that a thorough legal analysis is conducted when choosing to use any open-source licenses.In many cases, the (L)GPL is a viable solution to use, but it is important that the freedoms of the (L)GPL are not restricted from the user of an application or device using an (L)GPL library such as Qt, which may be difficult to achieve in some use cases.

I have read and understand my obligations when developing under the open source license of Qt. I confirm that my project complies with these terms.

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Ready to buy Qt?

Qt is available under term subscription and annual perpetual licensing options. Pricing is per developer seat per term. Embedded projects may be subject to distribution fees – contact us to learn more.

Pricing starts at $295/mo.

 

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