Along with DESQView and IBM’s TopView as already mentioned, this reminded me of the first version of PC Smalltalk put out by Digitalk that was called “Smalltalk

Along with DESQView and IBM’s TopView as already mentioned, this reminded me of the first version of PC Smalltalk put out by Digitalk that was called “Smalltalk Methods”. It was a character based windowed Smalltalk. This was quickly followed with the full bit mapped windowed Smalltalk/V. I believe all of this was when MS Windows still only had tiled windows without overlap.