Alexey Alekhin
Alexey Alekhin reviewedSpectacleMove and resize windows with ease on Mac.
 RecommendedPros: 

Simplicity, configurable keyboard shortcuts, doesn't get in your way, free and opensource

Cons: 

No mouse dragging behaviour

I like this tool. It's simple, free and doesn't get in your way. You just set the hotkeys you want to use and manage your windows with comfort. It's also open source: https://github.com/eczarny/spectacle

Alexey Alekhin has used this product for one year.