Make 2D Linework smoother without having to redraw the lines

Is there a plugin or a way to take 2D linework that has been drawn with the Freeform line tool and make it all more smooth curves? Or a plugin that has some sort of line correction feature upon drawing lines? I am trying to work out a very quick and efficient process for early stage schematic plans that I can draw quickly and efficiently.

The top line is drawn free form and the bottom line is what I am hoping to achieve.

Arc tool, Fredo Spline or Fredo Curvizard.

Thanks so much for the reply! I will look into these.

Curvizard looks promising.