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What Does Qt Mean?

Qt is a cross-platform application and graphical user interface (GUI) framework, a toolkit, that is used for developing software that can be run on different hardware platforms and operating systems. Qt makes it easy to develop software with native-looking (to the OS it is running on) GUIs using standard C++, which is why it is also classified as a widget toolkit.


Techopedia Explains Qt

Qt is essentially a multiplatform GUI toolkit for developing software applications using standard C++. It provides developers with all the essential functionality required to build cross-platform applications with “state-of-the-art” GUIs. Because Qt uses C++, it is fully object oriented and allows for easily extensible and true component programming.

Qt is marketed as a “write once, compile anywhere” framework that saves time for developers because they only need to create and maintain a single code base in whatever platform they decide to develop in and the final software will compile in every other platform.

Qt offers the following benefits:

  • Maintaining a single source tree
  • Porting an application to multiple platforms through simple recompilation
  • Broadening the audience of a product
  • Creating an application that runs at native speed and with a native look and feel to the platform it is running on

Platforms supported by Qt:

  • Android
  • iOS
  • Embedded Linux
  • OS X
  • QNX/Blackberry 10
  • Integrity
  • Windows/Windows CE
  • Wayland
  • X11
  • VxWorks

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Margaret Rouse
Technology Expert
Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.