Qt Modules

Qt Essentials

Qt Essentials define the foundation of Qt on all platforms. They are available on all supported development platforms and on the tested target platforms. Except the testing modules, which will remain source compatible, these modules will remain source and binary compatible throughout the lifetime of the major Qt version.

  • Qt Core

    Core non-graphical classes used by other modules.

  • Qt D-Bus

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

  • Qt GUI

    Base classes for graphical user interfaces.

  • 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 dynamic applications with custom user interfaces.

  • Qt Quick Controls

    Lightweight QML types for creating performant user interfaces for desktop, embedded, and mobile devices.

  • Qt Quick Layouts

    Layouts for arranging Qt Quick items in the user interface.

  • Qt Quick Test

    A unit test framework for QML applications, where 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.

Qt Addons

Addon modules bring additional value for specific purposes. These modules may only be available on some of the development platforms.

  • Qt 5 Core Compatibility APIs

    Qt Core APIs that were in Qt 5 but not Qt 6.

  • Qt Concurrent

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

  • Qt Help

    Classes for integrating documentation into applications.

  • Qt OpenGL

    C++ classes that make it easy to use OpenGL in Qt applications.

  • Qt Print Support

    Classes to make printing easier and more portable.

  • Qt Quick 3D

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

  • Qt Quick Timeline

    Enables keyframe-based animations and parameterization.

  • Qt Quick Widgets

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

  • Qt Shader Tools

    Tools for the cross-platform Qt shader pipeline, enabling the use of graphics and compute shaders in Qt Quick and other components in the Qt ecosystem.

  • Qt SQL

    Classes for database integration using SQL.

  • 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 XML

    Provides implementations of the SAX and DOM standards for XML.

  • Qt Wayland Compositor

    Provides a framework to develop a Wayland compositor.

Additional Qt libraries

Additional libraries are available either via the online installer or Qt Marketplace.

  • Qt 3D

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

  • Qt Image Formats

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

  • Qt Network Authorization

    Provides support for OAuth-based authorization to online services.

Qt 5

Documentation for Qt 5 releases.

  • Qt 5.15

    Long-term support version.

  • Qt 5.12

    Long-term support version.

Qt for Python

Python binding for Qt.

  • Qt for Python 6.0

    Official Python bindings for Qt 6.

  • Qt for Python 5.15

    Official Python bindings for Qt 5.

Documentation overview