Quintile – keyboard N×M grid tiling for macOS 5 days ago
Honestly, I don't understand grids on a laptop. Probably, if you have a 27"+ monitor or two, you need this. For my 16" laptop, I use several Spaces (virtual screens) with several applications assigned to each of them. I took this from my fvwm/icewm days, and it is still the best way to manage small screen spaces for me.