What are free tools for texture eyes 3D models?

Common free tools for texturing 3D eye models include Blender, GIMP, and Krita. - Blender: Use its built-in Texture Paint mode to paint directly on 3D eyes—no need to switch apps since it also handles modeling. - GIMP: Edit bitmap textures like iris (colored part) or sclera (white part) maps with its flexible image tools. - Krita: Create detailed touches like reflections or tiny sclera veins using its powerful brush system. Beginners should start with Blender—it combines modeling and texturing, making it easy to tweak eye shapes and textures in one place.