Proprietary software is any software that is not [free (as in freedom)](free_software.md)/[open source](open_source.md) software. Such software denies users and creators their basic freedoms (freedom of unlimited use, studying, modifying and sharing) and is therefore considered [evil](evil.md), in fact it is mostly [capitalist software](capitalist_software.md) 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).
