Spott - API to work with cities, countries and political divisions.
Unsplash Wallpaper - Gorgeous wallpapers on your Mac
IP Location - IPLocation.io provides a free lookup tool to check the location of your Public IP Address. It finds this data through various GEO IP databases and online services. Just enter an IP and check its location easily.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Planet Explorer - Interactive global satellite images
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android