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.
It has a great tranquil, soft beauty. I love the simple black & white color scheme. I especially love how the only thing black are the tree branches,so with the white fill of the A & the white background, it's creating great negative space.