| Modules for general software development |
| QtBluetooth | Classes for Bluetooth device interaction. |
| QtContacts | Classes for managing your contacts. |
| QtCore | Core non-graphical classes used by other modules |
| QtGui | Base classes for graphical user interface (GUI) components |
| Qt Location | Classes for location positioning, mapping, navigation and place search. |
| QtMultimedia | Classes for audio, video, radio and camera functionality |
| QtNetwork | Classes for network programming |
| QtOpenGL | OpenGL support classes |
| QtOrganizer | Classes for managing your calendar events. |
| QtPrintSupport | Classes for printing. |
| QtPublishSubscribe | Simplified mechanism for subscribing to notifications |
| QtQml | A declarative framework for bilding highly dynamic applications |
| QtQuick | A set of QML types that implement functionalities for applications |
| QtScript | Classes for evaluating Qt Scripts |
| QtScriptTools | Additional Qt Script components |
| QtSensors | Classes for reading hardware sensors |
| QtServiceFramework | Classes to create and start services |
| QtSql | Classes for database integration using SQL |
| QtSvg | Classes for displaying the contents of SVG files |
| QtSystemInfo | Classes for accessing information about a device |
| QtVersit | Classes to manage Versit. |
| QtWebKit | Classes for displaying and editing Web content |
| QtWidgets | Classes for widget development |
| QtXml | Classes for handling XML |
| QtXmlPatterns | An XQuery & XPath engine for XML and custom data models |
| Qt3D | Classes and elements for the 3D API. |
| Phonon | Multimedia framework classes |
| Modules for working with Qt's tools |
| QtDesigner | Classes for extending Qt Designer |
| QtHelp | Classes for online help |
| QtTest | Tool classes for unit testing |
| QtUiTools | Classes for handling Qt Designer forms in applications |
| Modules for Windows developers |
| QAxContainer | Extension for accessing ActiveX controls |
| QAxServer | Extension for writing ActiveX servers |
| Modules for Unix developers |
| QtDBus | Classes for Inter-Process Communication using the D-Bus |