Windows sit on an endless horizontal strip: a new one opens beside the current window and nothing else resizes, and a three-finger swipe scrolls to whatever is off screen. One modifier key (right Command by default) handles navigation, moving windows, and the vertically stacked workspaces, and a plain-text config reloads on save. It needs Apple silicon and macOS 14 or later, and is GPL-3.0.
Featured in: Small apps that reshape the Mac