Alpine is for example, I want to show/hide a menu on mobile. I want to upload files via drag and drop. I want to have a bin icon over an image when I hover with mouse to delete it. I want to double click an input field to edit it. I want to close an overlay when I click outside of it, or when I press “esc”.
Also modals, although you can do them in htmx very nicely too, so that’s borderline.
Anything that involves network, htmx.
Things that are just frontend, Alpine suits better.
_hyperscript is basically the Alpine equivalent.
It's like the difference between Turbo and Stimulus in the Rails world