Glass

Glass was Windows but before 1800 in 1800 Os-ready came out it might be a real operating system from the future in the 1800's I don't think it is. They created these operating systems:

Windows Old-Millenium

These operating systems were made in the 1700's!

Wow!

Also it was the first type of operating system to ever have color!

But before the 1600s ended Malcosoft/Malco decided to rename Vinda/Vindagus to glass.