All the essential Qt tools for all stages of Software Development Lifecycle: planning, design, development, testing, and deployment.

Download Qt and create applications for desktop and embedded systems with ease. Get a free trial of Qt Creator, Qt Design Studio, and more.

Welcome to the documentation pages for Qt, the cross-platform software development framework.

Qt Framework contains cross-platform software libraries and APIs for embedded systems & software development, including Python/C++, Windows, Linux.

Use Qt's libraries and APIs to develop software with native C++ performance for mobile, desktop, and embedded systems. Get a full overview of the Qt Framework

Experience the Power of Qt 6. Next-generation UX with a single tool to design and develop 2D & 3D UIs. Limitless scalability to deploy smartphone-like UIs on ultra-low-cost hardware and advanced graphics on supercomputers. Qt 6 is the foundation we will build on to deliver the productivity platform for the future.

Learn how you can use the Qt framework under both open source and commercial licenses. Download Qt for open source development and get started today!

What is Qt? Qt is a cross-platform application development framework for desktop, embedded and mobile. Supported Platforms include Linux, OS X, Windows, VxWorks, QNX, Android, iOS, BlackBerry, Sailfish OS and others. Qt is not a programming language on its own. It is a framework written in C++.

Qt's cross platform development tools make building and deploying software faster and more efficient. Localization & compiler tools simplify work further.

Qt offers two solutions for UI design: Qt Widgets and Qt Quick. Qt Widgets tightly integrates with desktop look-and-feel. Qt Quick UIs are dynamic with fluid animations and are optimal for touch interfaces.