John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Google Earth Studio - Let the world tell your story
Unsplash Wallpaper - Gorgeous wallpapers on your Mac
Google Earth Pro - Google Earth Pro allows you fly anywhere around the earth to view satellite imagery, maps, 3D building, and terrain, from galaxies in outer space to the canyons of the ocean.
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
SAS.Planet - SASGIS - Качаем карты и спутниковые снимки высокого разрешения из различных источников (google, яндекс.карт, kosmosnimki.ru, digitalglobe).