Free Asset Creation Tools - AtomicBlom/Slate GitHub Wiki

Blender https://www.blender.org/ 3d modelling, sculpting, Node Based Proceedural Texture Generation, UV Mapping.

Sprytile https://jeiel.itch.io/sprytile Blender addon that allows for quick level fabrication and texturing.

Font Squirrel https://www.fontsquirrel.com/ High quality free fonts.