Marble, on the other hand, is a free and open-source desktop application for GNU/Linux that lets you access a comprehensive world atlas on your PC, offering interesting features without having to be connected to the Internet.
You can maneuver your way around the map using the four panels on the left of the screen. The biggest one shows you the entire planet; you can zoom in, move around the map, and search for cities from the Navigation panel.
The Legend panel shows you what the different symbols, colors, and drawing on the map mean. The last panel, View, lets you choose from different viewing options for the world map: atlas view, plain view, night view, and satellite view.
The first time you open Marble, the maps are loaded from the Internet. After that one-time download, you won't have to worry about having an Internet connection in order to use the program ever again.