Hi, I stumbled across this minimalist single-window Acme clone: http://www.call-with-current-continuation.org/ma.tar.gz
It's written by Felix Winkelmann, the creator of Chicken Scheme. The source is dated 2016-11-17, so apparently it is recent work. I also took a screenshot. As you can see, windows are managed by the OS: https://s28.postimg.org/vujqgeiq5/ma_screen.jpg The author says on his homepage that he's using it for daily work. Best, mart
