I'm working on some sort of tiling wm but for the web. It's still pretty basic in terms of browsers, but already nice if you want to use it to display websites that don't change often. It's based on Electron. You can get it here https://github.com/Merkoba/Boneless -- Also there's this video that shows a bit how it looks right now https://www.youtube.com/watch?v=Rg_3_YoVlk8