Magnet Window Manager - Magnet Developers
DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
Spectacle App - Move and resize windows with ease.
Preme for Windows - Speeds up your window switching.
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).
GridMove - GridMove - A window management tool that can quickly arrange your windows into desktop grids.