Kitsune is created on the theorethical basis of Formex Algebra, but additional shapes are also available.
You can read more about Kitsune in chapter 5 of my PhD thesis: https://pea.lib.pte.hu/bitstream/handle/pea/19339/thesis_sarkozi_05_30.pdf?sequence=1&isAllowed=y
More publications: https://waset.org/Publication/formex-algebra-adaptation-into-parametric-design-tools-dome-structures/10008543
Please use these references if you use Kitsune for scientific work.
More about formex algebra: http://www.formexia.com/
To install Kitsune copy the .ghpy files to the Grasshopper Component folder.