GeoTag is described as «free OS X application that allows you to update image metadata with geolocation tags by panning and zooming in a map window and then clicking on the location where a photo was taken» and is an app in the photos & graphics category. There are more than 10 alternatives to GeoTag for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is Geosetter, which is free. Other great apps like GeoTag are Geotag, GeoPhoto, Houdahgeo and Pictomio.GeoTag alternatives are mainly Image Viewers but may also be Image Editors. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of GeoTag.