Packaging Egg Box - No, it isn't software exactly. But it is a great example of a design that works well at revealing the beauty and nature of the content to the user rather than hiding it, which is what UX design ought to do more.
Favourite author and colour combo - it doesn't get much better than this delicious collectors box. Hemingway and the Sea on Behance by Kajsa Klaesén curated by Packaging Diva PD. Collectors box packaging and covers for three novels by Ernest Hemingway.