Spott - API to work with cities, countries and political divisions.
Unsplash Wallpapers for Mac (Official) - Curated, HD desktop background photos from Unsplash.
BigDataCloud IP Geolocation API - Next Generation IP GeolocationAPI
Irvue - (previously 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.
Wallpaper Wizard - Wow-worthy backgrounds for Mac