--- title: 1. What is QSkinny? layout: docs --- :doctitle: 1. What is QSkinny? :notitle: QSkinny is a UI framework based on the Qt graphic stack and written in {cpp}. It allows users to write their UIs in {cpp} and/or QML. .The Fendt Tractor GUI image::https://www.fendt.com/de/images/5d19bb4e7b260601c8134e14_1673943667_web_de-DE.jpg[Fendt Tractor GUI] It is currently being used in the Fendt Tractor GUI project, see the picture above. For the Fendt Tractor GUI there is no QML used at all; the whole codebase is written in {cpp}. An overview of how QSkinny fits into the Qt architecture is depicted below: .QSkinny sits on top of QtQuick, while QML is optional image::/doc/tutorials/images/architecture-simple.png[QSkinny architecture]