Planet Explorer - Interactive global satellite images
Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
himawari.js - Real-time images of Earth from the Himawari-8 satellite
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.
Spire - The first activity, breath & state of mind tracker
Wallpaper Wizard - Wow-worthy backgrounds for Mac