Additional Modules

Qt Add-On modules bring additional value for specific purposes. These modules may only be available on some development platform. 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.

The Qt installers include the option of downloading the add-ons. For more information, visit the Getting Started with Qt page.

• Active Qt

  Classes for applications which use ActiveX and COM (Windows only).

• Qt Bluetooth

  Provides access to Bluetooth hardware.

• Qt Charts

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

• Qt CoAP

  Implements the client side of CoAP defined by RFC 7252.

• Qt Concurrent

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

• Qt 5 Core Compatibility APIs

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

• Qt Data Visualization

  UI Components for creating stunning 3D data visualizations.

• Qt 5 Compatibility APIs: Graphical Effects

  Qt Graphical Effects module from Qt 5 provided for compatibility.

• Qt Graphs

  Provides functionality for visualizing data in 3D as bar, scatter, and surface graphs, as well as 2D in area, bar, donut, line, pie, scatter, and spline graphs.

• Qt GRPC

  Provides an ability to generate Qt-based classes from protobuf specifications used to communicate with gRPC® services.

• Qt Help

  Classes for integrating documentation into applications.

• Qt HTTP Server

  A framework for embedding an HTTP server into a Qt application.

• Qt Image Formats

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

• Qt Labs Platform

  The experimental module that provides QML types for native platform extensions.

• Qt Location

  Provides QML and C++ interfaces to create location-aware applications.

• Qt Lottie Animation

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

• Qt MQTT

  Provides an implementation of the MQTT protocol specification.

• Qt Multimedia

  A rich set of QML types and C++ classes to handle multimedia content. Also includes APIs to handle camera access.

• Qt Network Authorization

  Provides support for OAuth-based authorization to online services.

• Qt NFC

  Provides access to Near-Field communication (NFC) hardware. On desktop platforms NDEF access is only supported for Type 4 tags.

• Qt OPC UA

  Protocol for data modeling and exchange of data in industrial applications.

• Qt OpenGL

  C++ classes that make it easy to use OpenGL in Qt applications. A separate library (Qt OpenGL Widgets) provides a widget for rendering OpenGL graphics.

• Qt PDF

  Classes and functions for rendering PDF documents on desktop platforms.

• Qt Positioning

  Provides access to position, satellite info and area monitoring classes.

• Qt Print Support

  Classes to make printing easier and more portable.

• Qt Protobuf

  Provides an ability to generate Qt-based classes from protobuf specifications.

• Qt Quick 3D

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

• Qt Quick 3D Physics

  Qt Quick 3D Physics provides a high-level QML module adding physical simulation capabilities to Qt Quick 3D.

• Qt Quick Timeline

  Enables keyframe-based animations and parameterization.

• 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 on Android, iOS, and Windows platforms.

• Qt Serial Bus

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

• Qt Serial Port

  Provides classes to interact with hardware and virtual serial ports.

• Qt Shader Tools

  Provides 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.

• Qt Spatial Audio

  Provides support for spatial audio. Create sound scenes in 3D space containing different sound sources and room related properties such as reverb.

• Qt SQL

  Classes for database integration using SQL.

• Qt State Machine

  Provides classes for creating and executing state graphs.

• Qt SVG

  Classes for displaying the contents of SVG files. Supports a subset of the SVG 1.2 Tiny standard. A separate library (Qt SVG Widgets) provides support for rendering SVG files in a widget UI.

• Qt TextToSpeech

  Provides support for synthesizing speech from text and playing it as audio output.

• Qt UI Tools

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

• 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 Wayland Client

  Provides the necessary functions for an application to act as a Wayland client and connect to a Wayland compositor.

• Qt Wayland Compositor

  Provides a framework to develop a Wayland compositor on Linux and Boot to Qt targets.

• 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

  Handling of XML in a Document Object Model (DOM) API.