Ink/Stitch - An Inkscape extension for designing machine embroidery patterns.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Crosti - make your own unique cross stitch design from custom image
GNU Octave - GNU Octave is a programming language for scientific computing.
Embird - Machine-Independent Embroidery Software
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.