Pulse Ambassador is described as 'Ambassador is a free helper application that allows for minor changes (change colors, re-size designs, clean-up short stitches, etc.) of embroidery designs that have been created in the commercial embroidery software Tajima DG/ML'. There are three alternatives to Pulse Ambassador for Windows, Linux, Mac, Raspberry Pi and Inkscape. The best alternative is Embroidermodder, which is both free and Open Source. Other great apps like Pulse Ambassador are Ink/Stitch (Free, Open Source) and Wilcom TrueSizer (Free).
Embroidermodder is a free machine embroidery software program which allows editing, scaling, and translating sewing machine embroidery files to a variety of formats. It allows the user to add custom modifications to their embroidery designs.
Based on the same core software as Wilcom’s acclaimed professional embroidery design software, .EMBroidery TrueSizer provides the same unique advantages of the ‘all-in-one’ EMB file format – at little or no cost.