Mac OS came out in 2001. This is software that was created by Apple to run the "Mac Computers." This software is still used to this day.
MS-DOS came out in 1981. This is software that was created by Microsoft to run x86 computers. This software is no longer used.
Windows New Technology came out in 1985. This is software that was created by Microsoft to run a ton of different computers. This software is still used to this day.
Windows Vista came out in 2006. This software that was created by Microsoft to run a variety of personal computers. This software is no longer used.
By the information given, Windows Vista was the last to be released.
Best of Luck!