Answer :
The Microsoft-developed Windows NT operating system has undergone a significant update with Windows 7.
Windows is a collection of different closed-source operating systems that were created and marketed by Microsoft. Typically, proprietary operating systems are created, developed, and sold by a single firm and are not intended to be modified or customized by consumers. Nonproprietary software is open-source software that is freely installable and usable. Proprietary OS often operates on name-brand vertically integrated switches. It also makes its source code completely available. Open-source or nonproprietary software can also be referred to as commercial software that can be purchased, rented, or licensed from its manufacturer or creator. The source code of proprietary software is typically unavailable to consumers or subscribers.
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