Project Oberon includes a GUI that in the Unix world would be described as using a tiling window manager. It doesn't include a word processor or a spreadsheet a

Project Oberon includes a GUI that in the Unix world would be described as using a tiling window manager. It doesn't include a word processor or a spreadsheet app - Oberon was created to build a workstation system, not an office machine - but a graphics editor is included. Other applications are available, of course, such as a tool for digital circuit design or an email tool. But one of the most important use cases for Oberon is probably software development - so one of the most important tools that is included with the system is the compiler.