Orange3 3.3.5 for Mac is available as a free download on our application library. Orange3 for Mac belongs to Developer Tools. This free Mac app is a product of University of Ljubljana.
From the developer:
Orange3 is component-based data mining software. It includes a range of data visualization, exploration, preprocessing and modeling techniques. It can be used through a nice and intuitive user interface or, for more advanced users, as a module for the Python programming language.
You may want to check out more Mac applications, such as wxFormBuilder, Site Studio or Wcode, which might be related to Orange3.