TraCFoil is a complete software for airfoils and ribs plotting, allows you to draw on the screen and after print out your ribs and airfoils, add spars, holes, L.E., T.E. You can also draw template for foam cutting with station lines and washout. English and metric units are supported. TraCFoil uses the DAT Files from

The license of this software is Free Trial Software, the price is $10.70, you can free download and get a free trial.