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Qt Features, Framework Essentials, Modules, Tools & Add-Ons

Explore the modules and tools of the latest Qt release and product offerings from The Qt Company. Discover which development platforms, operating systems, and coding languages are supported, as well as how The Qt Company products are licensed and packaged. 

Please select a package, license model, platform, or programming language to see, what items are available for that selection. Note that multiple selections are not supported. 

Note that the open-source license does not restrict running the tools. For example, GPLv3 affirms unlimited permission to run unmodified software. The license sets conditions to create and distribute derivate works. Using GPL v3-licensed Qt Creator does not imply that your software becomes GPL v3-licensed unless your software modifies existing software, which you are going to distribute and which is licensed under GPL v3. 

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Commercial: 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.

Qt for Application Development: Qt for Application Development is dual-licensed under commercial and open source licenses. Commercial gives you full rights to create and distribute software on your own terms without any open source obligations. It also gives you access to the official Qt Support team and a close strategic relationship with The Qt Company.

Qt for Device Creation: Ready-made solutions that speed up your device creation with enterprise-quality features for a truly professional development experience. Qt for Device Creation is a product available only under a commercial license.

M2M Protocols: A collection of modular, scalable, secure software libraries, development tools and interoperability protocols geared to make automation software development with Qt even more cost- and time-efficient.

LGPL v3: With LGPLv3 license option you can use the essential libraries and some add-on libraries of Qt. LGPLv3 allows for keeping your application source code closed as long as all the requirements of LGPLv3 are met.

GPL v3: With GPLv3 license option, you have access to almost all Qt framework functionality, as well as development and design tooling. Note that using GPL licensed framework libraries requires your application or device to be licensed under GPL as well.

GPL v2: All essential libraries and some add-on libraries of Qt are available under GPLv2 license option. Note that using GPL licensed framework libraries requires your application or device to be licensed under GPL as well.

Qt Safe Renderer: As an extension of Qt for Device Creation, Safe Renderer enables you to develop modern embedded systems that are both functionally safe and user-friendly. Pre-certified software components save time and money, and provide confidence in end-to-end certification of your safety-critical UI systems.

Qt Automotive Suite: A fully-fledged automotive software development toolkit built on Qt for Device Creation developed in collaboration with our technology partners, KDAB and Luxoft.

Python: Launched in 2018, the Python bindings already cover a lot of Qt. Check out the product map for the compatible components. Learn more in the Qt for Python technical documentation: https://doc.qt.io/qtforpython/

Design Tools

Everything you need for designing an amazing user interface and the ultimate user experience.

  • Qt Design Studio

    A UI design and development environment for creating animated user interfaces.

  • Qt Designer

    A tool for designing and building graphical user interfaces (GUIs) using Qt Widgets. Integrated into Qt Creator.

  • Qt Shader Tools

    Tools for the cross-platform Qt shader pipeline. These enable processing graphics and compute shaders to make them usable for Qt Quick and other components in the Qt ecosystem. 

  • QMLLive

    Provides a live reloader environment for rapid development of Qt Quick applications, dramatically reducing the time it takes to deploy and test changes in the UI design. 

  • QML Runtime

    A utility to load and display QML documents. 

  • Qt Quick Effect Maker

    A standalone tool for creating high-performance shader effects for Qt Quick. Provides both a node and code editor to maximize productivity.

Development 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

    A cross-platform, complete integrated development environment (IDE) for application developers to create applications for multiple desktop, embedded, and mobile device platforms.

  • Qt Linguist

    A set of tools for translating Qt C++ and Qt Quick applications into local languages.

  • qmake

    Qt's build automation tool that simplifies the build process across different platforms. Although qmake is still supported, the official build tool for Qt is CMake and we recommend developers to use CMake in new projects. 

  • CMake

    CMake is a tool to simplify the build process for development projects across different platforms. CMake automatically generates build systems, such as Makefiles and Visual Studio project files. 

  • makeqpf

    A tool to generate pre-rendered fonts for embedded Linux.

  • Meta-Object Compiler (moc)

    Generates meta-object information for QObject subclasses.

  • User Interface Compiler (uic)

    Generates C++ code from user interface files.

  • Resource Compiler (rcc)

    Embeds resources into Qt applications during the build process.

  • Qt D-Bus XML compiler (qdbusxml2cpp)

    Converts D-Bus interface descriptions to C++ source code.

  • D-Bus Viewer

    Introspection tool for D-Bus objects and messages.

  • Qt Visual Studio Tools

    Integrates the Qt development tools into Microsoft Visual Studio.

  • Qt Distance Field Generator

    Generates distance fields to improve load times of text-heavy Qt Quick user interfaces.

  • Qt Installer Framework

    Provides a set of tools and utilities to create installers for the supported desktop platforms.

  • Qt Assistant

    A tool for viewing Qt documentation.

  • On-device Deployment and Debugging

    On-device debugging and deployment of Qt applications via Qt Creator.

  • QDB

    A tool for controlling Boot2Qt devices. 

  • Android Deploy Qt (androiddeployqt)

    This tool automates the Qt application deployment on Android. 

  • Windows Deploy Qt (windowdeployqt)

    This tool automates the Qt application deployment on Windows. 

  • Tools for Active Qt

    Enables Qt integration with the ActiveX components. Includes Interface Description Compiler (IDC), dumpcpp, and dumpdoc tools. 

  • QDoc

    A tool used by Qt Developers to generate documentation for software projects.

  • qmllint

    A tool, verifying the syntax validity of QML files.

  • qmlformat

    A tool, automatically formatting the QML files in accordance with the QML Coding Conventions.

  • QML Profiler

    Enables you to get the necessary diagnostic information, allowing you to analyze the application code for performance issues. 

  • Qt Configuration Tool (qtconfig-gui)

    A tool, providing features and tools for creating and building smaller Qt binaries.

  • Python Shiboken Wizard

    A binding generator tool, which can be used to expose C++ projects to Python. 

  • Qt Quick Compiler

    Runs QML at a speed close to native with a QML Script and QML type compiler. The former compiles functions and expressions in QML files into C++ classes. The latter compiles QML objects structures into C++ classes. 

  • Qt Quick Compiler Extensions

    Decreases the refactoring effort to improve the coverage of compilation. Up to 30% speed-up can be achieved in the startup and execution over time. 

Framework 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.

  • Qt Core

    Core non-graphical classes used by other modules.

  • Qt GUI

    Base classes for graphical user interface components. Includes OpenGL.

  • Qt Network

    Classes to make network programming easier and more portable.

  • Qt QML

    Classes for QML and JavaScript languages.,All,All,C++

  • Qt Quick Dialogs

    Types for creating and interacting with system dialogs from a Qt Quick application. 

  • Qt Quick Layouts

    Layouts are items that are used to arrange Qt Quick 2 based items in the user interface.

  • Qt D-Bus

    Classes for inter-process communication over the D-Bus protocol.

  • Qt Quick

    A declarative framework for building highly dynamic applications with custom user interfaces.

  • Qt Quick Controls

    Provides lightweight QML types for creating performant user interfaces for desktop, embedded, and mobile devices. These types employ a simple styling architecture and are very efficient.

  • Qt Quick Test

    A unit test framework for QML applications, where the test cases are written as JavaScript functions.

  • Qt Test

    Classes for unit testing Qt applications and libraries.

  • Qt Widgets

    Classes to extend Qt GUI with C++ widgets.

Framework Add-Ons

Qt is an unbelievably comprehensive framework full of features beyond the essentials all designed to provide you with a truly professional development experience.

  • Qt Digital Advertising

    New! All-in-one development solution to monetise digital ads on embedded screens/mobile/desktop adds.

  • Qt Multimedia

    Classes for audio, video, and camera functionality. 

  • Qt Multimedia Widgets

    Qt Multimedia sub-module, containing widget-based classes for implementing multimedia functionality.

  • Active Qt

    Classes for applications which use ActiveX and COM.

  • Qt 3D

    Functionality for near-realtime simulation systems with support for 2D and 3D rendering.

  • Qt Bluetooth

    Provides access to Bluetooth hardware. 

  • Qt Concurrent

    Classes for writing multi-threaded programs without using low-level threading primitives.

  • Qt Help

    Classes for integrating documentation into applications, similar to Qt Assistant.

  • Qt Image Formats

    Plugins for additional image formats: TIFF, MNG, TGA, WBMP.

  • Qt NFC

    Provides access to Near-Field communication (NFC) hardware. 

  • Qt OpenGL

    OpenGL support classes. Deprecated in favor of the QOpenGL* classes in the Qt GUI module.

  • Qt Positioning

    Provides access to position, satellite and area monitoring classes. 

  • Qt Print Support

    Classes to make printing easier and more portable.

  • Qt Quick Widgets

    Provides a C++ widget class for displaying a Qt Quick user interface.

  • Qt Remote Objects

    Provides an easy to use mechanism for sharing a QObject's API (Properties/Signals/Slots) between processes or devices. 

  • Qt SCXML

    Provides classes and tools for creating state machines from SCXML files and embedding them in applications.

  • Qt Sensors

    Provides access to sensor hardware and motion gesture recognition. 

  • Qt Serial Bus

    Provides access to serial industrial bus interface. Currently the module supports the CAN bus and Modbus protocols. 

  • Qt Serial Port

    Provides access to hardware and virtual serial ports. 

  • Qt SVG

    Classes for displaying the contents of SVG files. Supports a subset of the SVG 1.2 Tiny standard.

  • Qt UI Tools

    Classes for loading QWidget based forms created in Qt Designer dynamically, at runtime.

  • Qt WebChannel

    Provides access to QObject or QML objects from HTML clients for seamless integration of Qt applications with HTML/JavaScript clients. 

  • Qt WebEngine

    Classes and functions for embedding web content in applications using the Chromium browser project. 

  • Qt WebSockets

    Provides WebSocket communication compliant with RFC 6455. 

  • Qt WebView

    Displays web content in a QML application by using APIs native to the platform, without the need to include a full web browser stack. 

  • Qt XML

    C++ implementations of SAX and DOM.

  • Qt Wayland Compositor

    Provides a framework to develop a Wayland compositor.

  • Qt SQL

    Classes for database integration using SQL.

  • Qt Charts

    UI Components for displaying visually pleasing charts, driven by static or dynamic data models.

  • Qt Data Visualization

    UI Components for creating stunning 3D data visualizations.

  • Qt Network Authorization

    Provides support for OAuth-based authorization to online services.

  • Qt Virtual Keyboard

    A framework for implementing different input methods as well as a QML virtual keyboard. Supports localized keyboard layouts and custom visual themes.

  • Qt Safe Renderer

    Provides a UI rendering component that can be used to render safety-critical items, such as warning indicators, in functional safety systems.

  • In-Vehicle Infotainment Reference UI

    A Qt reference UI implementation for In-Vehicle Infotainment (IVI) systems.

  • Qt Application Manager

    Provides a basis for a multi-application embedded system, taking care of application lifecycle management.

  • Qt Device Utilities

    Provides functionality for controlling various settings in embedded applications. 

  • Qt MQTT

    A machine-to-machine (M2M) protocol that provides a communication channel with minimal overhead.

  • Qt OPC UA

    A Qt API for interacting with OPC UA, a protocol for data modelling and data exchange in industrial applications.

  • Qt CoAP

    Constrained Application Protocol (CoAP) is a machine-to-machine web transfer protocol for use with constrained nodes and networks in the Internet of Things.

  • Qt Quick Ultralite Controls

    Provides lightweight UI controls that can be customized to create performant user interfaces for embedded devices.

  • Qt Quick Ultralite

    A graphics rendering engine to render QML applications on resource-constrained hardware with low memory requirements.

  • Qt for MCU Essentials Deployment Platforms

    Hardware specific adaptations to allow Qt Quick Ultralite applications to run on target hardware.

  • Qt for MCU Ultimate Deployment Platforms

    Hardware specific adaptations to allow Qt Quick Ultralite applications to run on target hardware.

  • Qt Design Studio Bridge

    Adobe Illustrator, Photoshop, and XD and Sketch and Figma Bridges for the Qt Design Studio to convert artwork into Qt Quick files.

  • Qt Charts for MCUs

    Qt Charts for MCUs provide easy to use chart components for Qt Quick Ultralight. 

  • Qt Quick Calendar

    The Calendar provides a collection of modular building blocks for creating calendars in Qt Quick. 

  • Qt Quick TreeView n

    TreeView provides a QML type to display data from any QAbstractItemModel. It extends TableView with expandable and collapsable nodes, which can be used in either a list or a table model. 

  • Cursor Navigation

    Cursor navigation provides a selector for individual UI elements such as buttons. In addition to a 4-way navigation used in traditional rectangular UIs, it allows a free navigation to move the cursor in any direction. 

  • Qt Quick Timeline

    Enables keyframe-based animations and parameterization. 

  • Qt Lottie Animation

    A QML API for rendering graphics and animations in JSON format, exported by the Bodymovin plugin for Adobe ® After Effects. 

  • Qt 5 Core Compatibility APIs

    The module contains the Qt Core APIs, which will be no longer supported in Qt 6 and therefore were removed from Qt 6.

  • Qt State Machine

    Provides classes for creating and executing state graphs. 

  • Qt Quick 3D

    Provides a high-level API for creating 3D content or UIs based on Qt Quick. 

  • Qt Interface Framework (former IVI)

    Provides both the tools and the core APIs to implement middleware APIs, middleware back ends, and middleware services. 

  • Qt for Android Automotive OS Car Service API

    Java bindings for C++ code to interact with the Car API. 

  • Simulink support for Qt Design Studio

    Use the Simulink connector to connect simulation to your UI. Simulink is a MATLAB-based graphical programming environment for modelling, simulating, and analysing multi-domain dynamic systems. 

  • Qt PDF

    Displays PDF documents. Allows showing product documentation within the application. 

  • Boot to Qt

    A lightweight, Qt-optimized, full software stack for embedded Linux systems. The stack is using the traditional embedded Linux kernel built with Poky, the reference distribution of Yocto Project.

  • Qt for Python commercial add-ons

    Machine-to-machine protocols (CoAP, MQTT, OPC UA) for Python developers. 

  • Qt HTTP Server

    Supports building an HTTP server into an application. It provides a server-side implementation of the HTTP protocol with Transport Layer Security support. 

  • Qt Quick 3D Physics

    Qt Quick 3D Physica provides a high-level API for physics simulation. It supports simulating interactive rigid bodies as well as static meshes and non-colliding bodies used for detecting overlaps.  

  • Qt TextToSpeech

    Qt TextToSpeech enables Qt applications to access accessibility features such as text-to-speech. 

  • Qt for Python

    Offers the official Python bindings for Qt, which enables you to use Python to write your Qt applications. 

  • Qt Location

    Supports adding items, e.g., highlighting certain geographical areas, on the top of the maps. For example,

  • Qt gRPC

    Allows easy access to gRPC-based services with Qt.

  • Qt Protobuf

    A generator for Qt-based classes for serializing and deserializing protobuf messages.