What is it?
It's a tool which can alter the gravity of anything in full 360 degree space.
To use it just start your gravity selection by holding left click and move your mouse to the direction you want the gravity of the selections to be and then let go of the mouse.
Boom, now your objects are gravitized :D
And it has a quick menu which is used to adjust:
Gravitizer tool controls:
Currently the Gravitizer's quick menu works only with a keyboard and mouse combination.
Quick menu controls: