Macubes has introduced Gridsutra 1.0 (http://www.gridsutra.com) for macOS. It’s a $2.99 tool that allows you to work in different windows at the same time. Gridsutra re-sizes and arranges windows using multiple layout options that can be predefined by users.
Gridsutra boasts a minimalist status bar menu. It includes a Launcher panel that delivers multiple layout profiles at the stoke of a key. Shortcut keys can be assigned from the menu to facilitate the activation of preset layout profile. For those who prefer to use a mouse, Gridsutra allows windows to be arranged in three clicks.