You can experience something very close to it with AROS, which is free both as in speech/beer, can be used either native stand alone or hosted, that is, as proc

You can experience something very close to it with AROS, which is free both as in speech/beer, can be used either native stand alone or hosted, that is, as process under other operating systems without requiring any installation. There's also an ARM port which runs native on the Raspberry PI or hosted under Android devices. https://aros.sourceforge.io/ https://aros.sourceforge.io/