At the European XFEL, the inhouse developed Supervisory Control and Data Acquisition System (SCADA) Karabo has been steering and facilitating scientific experiments at the photon beamlines since the free-electron laser started its operation in 2017.
A single Graphical User Interface (GUI), the so-called KaraboGui, has been designed as a multi-purpose application and is the preferred entry point to the control system. Implementing a nowadays standard event-driven asynchronous server-client approach, this application based on Python  and Qt  is the prime choice for hardware and experiment control and as well configuring detector calibration and data acquisition. Equipped with a generic panel builder and a package updater for external component extensions, the KaraboGui matches the requirements of a present and future graphical user interface for the experiments.
All user-interface panels build in the KaraboGui can be translated into a Scalable Vector Graphics (SVG) representation and loaded or edited with an SVG graphics program (e.g. Inkscape ).
This contribution describes in detail the client application KaraboGui and its usage at the European XFEL with an outlook of a web representation.
 Hauf, Steffen, et al. "The Karabo distributed control system." Journal of synchrotron radiation 26.5 (2019): 1448-1461.
 Python. https://docs.python.org/3/library/
 Qt Framework. https://www.qt.io/
 Inkscape. http://www.inkscape.org/
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