# Proprietary Software

Proprietary software is any software that is not [free (as in freedom) software](free_software.md). This kind of software is basically always non-based, in fact it is mostly commercial software designed to abuse its user in some way. Examples of proprietary software are [MS Windows](windows.md), [MacOS](macos.md), [Adobe Photoshop](photoshop.md) and almost every [game](game.md).