Qt
More info
- Creator
- Trolltech
- Released
- Owner
- The Qt Company
- Type
- GUI framework
- License
- LGPL-3.0 / commercial
- Website
- qt.io
Cross-platform C++ framework for graphical interfaces — and rather more besides.
Norwegian company Trolltech released it in 1995. Its signature mechanism is signals and slots, a decoupled event model implemented by a precompiler (moc) because C++ lacks reflection. The framework also covers networking, threading, databases and XML.
It carries KDE, VLC, OBS Studio, Autodesk Maya and large parts of automotive and industrial HMIs. QML/Qt Quick is the declarative option for modern interfaces. Licensing is dual — commercial or LGPL — which has historically made the licence a recurring topic of conversation.