Developing Ink/Stitch
Ink/Stitch Organization
The plugin code as well as the pyembroidery repository can be found within the Ink/Stitch organization on GitHub.
Inkscape Plugin
Ink/Stitch is an Inkscape plugin. Have a look at the inkex documentation on their website to learn more about how to write Inkscape plugins.
Ink/Stitch Languages
Ink/Stitch and pyembroidery are written in Python 3.8. Python 3.8 is the last python version which is supported by Windows 7.
Print PDF and the Simulator use Electron with Vue. The print preview uses the Jinja Template Framework, which may be converted to be using vue.js in future versions.