Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Ink/Stitch - An Inkscape extension for designing machine embroidery patterns.
FreeCAD - An open-source parametric 3D modeler
Embird - Machine-Independent Embroidery Software
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Wilcom TrueSizer - Based on the same core software as Wilcom’s acclaimed professional embroidery design software, .