Give 5 operating system manufacturer and the operating system they have prod

Answer 1

https://en.wikipedia.org/wiki/List_of_operating_systems

Click on the ones you want to know more about for a link to an article about that system.

Answer 2

http://www.webopedia.com/sgsearch/results?cx=partner-pub-8768004398756183%3A6766915980&cof=FORID%3A10&ie=UTF-8&q=OS

Answer 3

Oops. Here is the live link:

http://en.wikipedia.org/wiki/List_of_operating_systems