Respuesta :

The operating systems that is not proprietary among the softwares is Linus

Proprietary software can be regarded as non-free software whereby the software's publisher decided to reserves some rights from licenses  so others cannot modify or use it.

Examples of Proprietary software are;

  • MS-DOS
  • Windows 2000

Therefore,the operating systems that is not proprietary is Linus.

Learn more about proprietary software at;

https://brainly.com/question/1538272