Even if you're a digitzer, this is still the essential tool for you and all embroiderers: If you have designs on your Mac, then you need to be able to find them, view them, see their colors and stitch counts, design dimensions, etc. Imagine looking inside a zip file without opening it, viewing the design, it's stitch count, it's modification date, etc. and the thumbnail next to it shows the original art too! To use it, simply drag the design to your USB stick, or to a machine, or write a Designer 1 disk or USB. You're ready to sew. Maybe you want to print a template? Colorize the design? Convert it to a particular machine format? These are jobs that every embroiderer does, no matter what their skill level.