VintageOS

VintageOS is a never released OS made by Nebula's company "Inspirat Corporation" in February 2018, although Inspirat company has been invented in 2018, but the start of it is in 2006. https://i.imgur.com/iTxK9EO.png

There's also SunflareOS is been created in 1985, that is predcessor of the VintageOS, and owned by Vintage industries.

The stage of the development is started in 2013

In 999999, Inspirat ends their existence, and being replaced by Nebula company.