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.
Proprietary software is software that is owned by an individual or a company (usually the one that developed it). There are almost always major restrictions on its use, and its source code is almost always kept secret.roprietary software is software that is owned by an individual or a company (usually the one that developed it). There are almost always major restrictions on its use, and its source code is almost always kept secret.