Open Source, whether it applies to an Operating System or a utility program means you have the source code and can modify it. Depending on the license used there may be some restrictions on your modifications so it is best to look at the license that comes with the Open Source software.
An open-source operating system is one that is available to the general public for use and/or modification from its original design free of charge.
Not if you have to pay for the OS
"Linux is a computer operating system, like Windows." "Linux is an OS, but the code for it is open source, meaning it is available to anyone and can be manipulated by any user."
The source code (actual programming of the system) is available for download and modification. There is no license fee for open source software but it is usually managed by an oversight organization to guard against abuse.
The source code is freely available, in accordance with the licence agreement.
Android is an open-source mobile operating system by Google, currently the most popular available.
Meaning of open source OS
Open source
OS is an open-source operating system
LINUX and Unix OS is open-source operating system.....! but Windows version OS is not the open-source operating system....!
Available 237 mean there is 237 seats are available for booking. Source - TravelKhana
There's no need to break the Android code (Android is an Open Source Operating System) as the source code of Android is already available over their developer section.