Magnet Window Manager - Magnet Developers
Rectangle - Window management app based on Spectacle, written in Swift.
Spectacle App - Move and resize windows with ease.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
Moom - Move your mouse over the green zoom button in any window, and Moom's mouse control overlay will appear (as seen in the above animation).
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.