- Foundation of Qt on all platforms.
- Available on all supported development platforms and on the tested target platforms.
- Source and binary compatible throughout Qt 5 (major version).
- Testing modules: source compatible only.
- General and useful for a majority of Qt applications.
- Add-on: a module with a special purpose.
| Module | Description |
|---|---|
| Qt Core | Core non-graphical classes used by other modules. |
| Qt GUI | Base classes for graphical user interface (GUI) components. (Includes OpenGL) |
| Qt Multimedia | Classes for audio, video, radio and camera functionality. |
| Qt Multimedia Widgets | Widget-based classes for implementing multimedia functionality. (It provides additional multimedia-related widgets and controls. The classes expand the capabilities of the Qt Multimedia and Qt Widgets) |
| Qt Network | Classes to make network programming easier and more portable. |
| Qt QML | Classes for QML and JavaScript languages. |
| Qt Quick | A declarative framework for building highly dynamic applications with custom interfaces. |
| Qt Quick Controls | Provides lightweight QML types for creating performant user interfaces for desktop, embedded and mobile devices. (Simple styling architecture. Very efficient.) |
| 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 Quick Test | A unit test framework for QML applications, where the test cases are written as JavaScript functions. |
| Qt SQL | Classes for database integration using SQL |
| Qt Test | Classes for unit testing Qt applications and libraries. |
| Qt Widgets | Classes to extend Qt GUI with C++ widgets. |
Includes by default:
- Qt Core
- Qt Gui
To link only against Qt Core:
QT -= gui
- May only be available on some development platforms.
- Brings additional value for specific purposes.
- Many add-on modules are either feature-complete and exist for backwards compatibility or are only applicable to certain platforms.
- Each add-on module specifies its compatibility promise separately.
| Module | Dev. Platform | Target Platform | Description |
|---|---|---|---|
| Active Qt | Windows | Windows | Classes for applications which use ActiveX and COM |
| Qt 3D | All | All | Functionality for near-realtime simulation systems with support for 2D and 3D rendering |
| Qt Android Extras | All | Android | Provides platform-specific APIs for Android. |
| Qt Bluetooth | All | Android, iOS, Linux, macOS, UWP | Provides access to Bluetooth hardware |
| Qt Concurrent | All | All | Classes for writing multi-threaded programs without using low-level threading primitives |
| Qt D-Bus | All | All | Classes for inter-process communication over the D-Bus protocol |
| Qt Gamepad | All | Android, iOS, macOS, tvOS (+ tvOS remote), Linux, Windows, and QNX | Enables Qt applications to support the use of gamepad hardware |
| Qt Graphical Effects | All | All | Graphical effects for use with Qt Quick 2 |
| Qt Help | All | All | Classes for integrating documentation into applications, similar to Qt Assistant |
| Qt Image Formats | All | All | Plugins for additional image formats: TIFF, MNG, TGA, WBMP |
| Qt Location | All | All | Displays map, navigation, and place content in a QML application |
| Qt Mac Extras | All | macOS | Provides platform-specific APIs for macOS |
| Qt NFC | All | Android and Linux | Provides access to Near-Field communication (NFC) hardware |
| Qt OpenGL (deprecated) | All | All | OpenGL support classes. Deprecated in favor of the QOpenGL... classes in the Qt GUI module |
| Qt Platform Headers | Windows, Linux, macOS | Windows, Linux, macOS, Android | Provides classes that encapsulate platform-specific information, tied to a given runtime configuration of a platform plugin - QPA |
| Qt Positioning | All | Android, iOS, macOS, Linux, UWP | Provides access to position, satellite and area monitoring classes. |
| Qt Print Support | All | All | Classes to make printing easier and more portable |
| Qt Purchasing | All | Android, iOS, macOS | Enables in-app purchase of products in Qt applications |
| Qt Quick Extras | All | All | Provides a specialized set of controls that can be used to build interfaces in Qt Quick |
| Qt Quick Timeline | All | All | Enables keyframe-based animations and parameterization |
| Qt Quick Widgets | All | All | Provides a C++ widget class for displaying a Qt Quick user interface |
| Qt Remote Objects | All | All | Provides an easy to use mechanism for sharing a QObject's API (Properties/Signals/Slots) between processes or devices |
| Qt Script (Deprecated) | All | All | Classes for making Qt applications scriptable. Deprecated in favor of the QJS... classes in the Qt QML module |
| QtSCXML | All | All | Provides classes and tools for creating state machines from SCXML files and embedding them in applications |
| Qt Script Tools (Deprecated) | All | All | Additional components for applications that use Qt Script |
| Qt Sensors | All | Android, iOS, UWP, Mer and QNX | Provides access to sensor hardware and motion gesture recognition |
| Qt Serial Bus | All | Windows, Linux, Boot to Qt targets, QNX | Provides access to serial industrial bus interface. Currently the module supports the CAN bus and Modbus protocols |
| Qt Serial Port | All | Windows, Linux, maxOS, QNX | Provides access to hardware and virtual serial ports |
| Qt Speech | All | All except QNX | Provides support for accessibility features such as text-to-speech |
| Qt SVG | All | All | Classes for displaying the contents of SVG files |
| Qt UI Tools | All | All | Classes for loading QWidget based forms created in Qt Designer dynamically, at runtime |
| Qt WebChannel | All | All | Provides access to QObject or QML objects from HTML clients for seamless integration of Qt applications with HTML/JavaScript clients |
| Qt WebEngine | All | Windows, Linux, macOS | Classes and functions for embedding web content in applications using the Chromium browser project |
| Qt WebSockets | All | All | Provides WebSocket communication compliant with RFC 6455 |
| Qt WebView | All | Platforms with a native web engine | 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 Windows Extras | All | Windows | Provides platform-specific APIs for Windows |
| Qt X11 Extras | All | Linux/X11 | Provides platform-specific APIs for X11 |
| Qt XML | All | All | C++ implementations of SAX and DOM. Note: QXmlStreamReader and QXmlStreamWriter are already part of Qt Core |
| Qt Wayland Compositor | Linux | Linux and Boot to Qt targets | Provides a framework to develop a Wayland compositor |
| Module | Dev. Platform | Target Platform | Description |
|---|---|---|---|
| Qt Charts | All | All | UI Components for displaying visually pleasing charts, driven by static or dynamic data models |
| Qt Data Visualization | All | All | UI Components for creating stunning 3D data visualizations |
| Qt Lottie Animation | All | All | A QML API for rendering graphics and animations in JSON format, exported by the Bodymovin plugin for Adobe After Effects |
| Qt Network Authorization | All | All | Provides support for OAuth-based authorization to online services |
| Qt Virtual keyboard | All | Linux and Windows desktop, and Boot to Qt targets | A framework for implementing different input methods as well as a QML virtual keyboard. Supports localized keyboard layouts and custom visual themes |
| Qt for WebAssembly | All | Web browsers with WebAssembly support | A platform target - QPA - to compile Qt applications for the web browsers using WebAssembly |
| Qt Quick 3D | All | All | Provides a high-level API for creating 3D content or UIs based on Qt Quick |
| Qt Quick WebGL | All | WebGL-enabled web browsers | Provides a platform plugin that allows streaming Qt Quick user interfaces over the network using WebGL |
- Modules and tooling built on top of the Qt libraries to provide additional value.
- Their have their own release schedule, and are available under commercial license.
| Feature | Description |
|---|---|
| Qt Automotive Suite | A collection of software components and tools to enable development of In-Vehicle-Infotainment (IVI) systems. Built on top of the Qt for Device Creation offering and compliant with the GENIVI automotive platform architecture |
| Qt for Automation | Libraries and tools for automation related domains, such as KNX, OPC UA, and MQTT |
| Qt for Device Creating | Tools for fast, easy, and fully-integrated embedded device application development. Included in most other value-add solutions(e.g. Qt Automotive Suite) |
| Qt for MCUs | Offers a complete graphics framework and toolkit with everything needed to design, develop, and deploy GUIs on microcontroller units (MCUs). Applications can run either on bare metal or on a real-time operating system |
| Feature | Description |
|---|---|
| Qt PDF (Technology Preview) | Provides C++ and QML APIs for rendering PDF documents |
| Feature | Description |
|---|---|
| Qt Designer | Classes for extending Qt Designer |