DESQview (as its maker styled it) was a great program for those of us who weren't convinced yet by Windows. While you're right that it started out as text-only

DESQview (as its maker styled it) was a great program for those of us who weren't convinced yet by Windows. While you're right that it started out as text-only (although IIRC later versions supported mice, and you could drag windows around and resize them that way), one of Quarterdeck's last products was DESQview/X, which was basically an X11 server running under DOS. It could run 16-bit Windows applications, DOS applications, and X applications.