WallpapersEveryday - Gorgeous wallpapers on your desktop in just one click or auto-delivered at chosen time intervals.
Wallcat - Enjoy a new, beautiful wallpaper, every day.
Ruler for Windows - It's a screen ruler for Windows.
Splashify - Beautiful desktop wallpapers for Mac and Windows
Fondo - Find the most beautiful wallpapers from Unsplash.com
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.