Cycle focus between windows in the same Sway container.
go install github.com/alternateved/swivelswivel # focus next window in container
swivel --prev # focus previous window in containerBind to keys in your Sway config:
bindsym $mod+Tab exec swivel
bindsym $mod+Shift+Tab exec swivel --prev
Finds the focused window's parent container and cycles focus to the next/previous sibling window, wrapping around at boundaries. If the focused window isn't in a multi-window container, does nothing.