Penc is a window manager app for macOS designed for use with the trackpad. It lets you use trackpad gestures along with the Command key to move, resize and snap windows to the screen.
HOW IT WORKS
Double press and hold Command Key (?) to activate Penc
Drag with two fingers to move the window
Pinch with two fingers to resize the window
Fast swipe with two fingers to snap the window into halves/quarters