Does anyone know of any epub software programs that allow to organize your text files and images into folders and subfolders (other than Calibre)?
I started out with InDesign, which, unbelievably, doesn't let you work with HTML. I then tried Sigil, which is ten times easier to use but doesn't allow subfolders. I was told that Calibre supports subfolders, but it isn't working for me.
So I just wondered if you know of any other epub programs that do support subfolders. Ideally, I'd like to find something as user-friendly as Sigil and not too expensive.