I just found out about Hot Glue yesterday from this thread! Hot Page is pretty different in that the idea is to give people a way to edit DOM like they would with a text editor but with a visual UI and drag-and-drop. Hot Glue does have a visual UI but it's an abstraction on a web page that uses absolute positioning instead of the normal document flow. I've seen so many pages like this break on different devices or window sizes that I'm not really a fan of the approach. You can read more about the philosophy behind Hot Page here: https://hot.page/takes/picking-the-right-abstraction