Re:The GTK+3 port of GIMP is officially finished
by LeFantome on Thursday April 20, 2023 @12:25AM
(#35636391)
2011? Try 1992!
DesqView/X was graphically multi-tasking DOS programs and running X applications the year after Linux was released. This was the Windows 3.1 era ( no cooperative multitasking ) and before OS/2 2.0 was out. Amazing.
Like everything else at the time though, it could not run Windows applications ( Microsoft Office ) and so it was doomed.
https://virtuallyfun.com/2011/03/27/desqviewx/
There's also a long running ticket in dosemu2 around some issues with DesqView/X https://github.com/dosemu2/dosemu2/issues/606
In some more years it will probably be working fine there.