2D Tools
From Mashinky
You can use basically any 2d Painting tool to create textures for Mashinky. You only have to be able to export created model into the native .dds format.
Down here are lists containig some of the Modelling tools, exporters and resource pages.
Contents
Grayscale Coversion
Paid 2d texture tools
Open Source / Free 2d texture tools
Resources
https://www.textures.com/
https://www.poliigon.com/textures/