Cardboard: a scrollable tiling window manager
In essence, this is similar how I setup and use Spaces on macOS. Have a number of spaces that are horizontally laid out with a three finger left/right swipe between them.For each Space, you can make the apps full-screen or split screen to have variable width windows. Of course you don't need to make them full screen but it does keep it simple similar to Cardboard.The added functionality with this approach is that you can use the Space as a casual grouping of windows in a related project.