Hivemapper - Build maps that reveal changes 🌏
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
Google NightWalk - An audio Streetview tour around Marseille
Wallcat - Enjoy a new, beautiful wallpaper, every day.
Cat Street View - Explore Japan... as a cat.
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.