Author here, I just chose the fire cursor for the demo. There are lots of other shaders available, eg https://github.com/KroneCorylus/ghostty-shader-playground/

Author here, I just chose the fire cursor for the demo. There are lots of other shaders available, eg https://github.com/KroneCorylus/ghostty-shader-playground/tree/main/shaders https://github.com/KroneCorylus/ghostty-shader-playground/tr..., they have a simple smear cursor like Neovide's.