there are many type of open source operating system like Linux which provide their source code so you may edit it according to your need.but window is not give their source code.
Many operating systems now can run on standalone computers and also on networked computers. Standalone or generic operating systems are the ones which run on standalone computers like Windows...
they difference is the network operating system is the type of system that a computer or -IT technology Company uses after it has trademarked it. The OPERATING SYSTEM is the home version
The difference is that one is a general concept, and the other is an example implementation. Unix is the name of a specific family of operating systems.