Select your Operating System below: 1  OSX 10.11 and newer. 2  OSX 10.10 and older. 3  Click on the Apple logo in the upper-left corner of your screen.  Click on the Apple logo in the upper-left corner of your screen.
Part of the Open source glossary: Also see open and Open Source. In information technology, proprietary describes a technology or product that is owned exclusively by a single company that carefully guards knowledge about the technology or the product's inner workings.n information technology, proprietary describes a technology or product that is owned exclusively by a single company that carefully guards knowledge about the technology or the product's inner workings.
legal Definition of proprietary plural proprietaries 1: something that is used, produced, or marketed under exclusive legal right of the inventor or maker; specifically: a drug (as a patent medicine) that is protected by secrecy, patent, or copyright against free competition as to name, product, composition, or process of manufacture