Wallcat - Enjoy a new, beautiful wallpaper, every day.
Hivemapper - Build maps that reveal changes 🌏
Splashify - Beautiful desktop wallpapers for Mac and Windows
Urban Jungle Street View - Explore the world through Google Street View: Jungle Mode
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
Cat Street View - Explore Japan... as a cat.