Thanks!! I used a couple of resource packs from (seamless-space-backgrounds, 2d-planet-pack, topdown_rpg_pack and vacaroza_rpg_pack) for the sprites (so I don't know what they used to create them) .... but ... for any customizations I used GIMP and PixelFormer.
https://ezgif.com/sprite-cutter did help in cutting up the sheets as well.
Other than that ... it's all in Godot!
AnimatedSprite for the frame-by-frame animations, and a Path2D/PathFollow2D for the spaceship movement!