Wallcat - Enjoy a new, beautiful wallpaper, every day.
Planet Explorer - Interactive global satellite images
Splashify - Beautiful desktop wallpapers for Mac and Windows
Pictogon - The fastest and easiest way to create interactive images
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
himawari.js - Real-time images of Earth from the Himawari-8 satellite