Orange Data Mining is a desktop application for visual data analysis and machine learning. Users build an analysis by connecting widgets on a canvas without writing code; the same functions are available as a Python library. It runs locally on Windows, macOS and other platforms and is distributed as free software.
The software is developed at the Bioinformatics Laboratory of the University of Ljubljana in Slovenia and is licensed under GPL version 3 or later, so the code can be inspected, modified and redistributed. The maintainer is a public university rather than a company, and no commercial parent exists. Because the software runs on the user's own computers, data is processed on the organisation's own systems and no vendor cloud receives it. For a European organisation, the project is seated in the EU and the choice of storage stays with the user.