Witch - Welcome to the world of W. i. t. c. h.
Rectangle - Window management app based on Spectacle, written in Swift.
Hyperswitch - HyperSwitch provides a compelling alternative to HyperDock for keyboard junkies. What's New
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
Contexts - Switch between application windows effortlessly — with Fast Search, a better Command-Tab, a Sidebar or even a quick gesture. Free trial available.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.