Abc-Map is a free and open source mapping software. With Abc-Map you can easily create, edit and visualize geospatial information. You can export maps to PDF or share them online and even embed them in your websites. Abc-Map works on all platforms with a web browser (Linux, Mac OSX, Android, IOS, Windows). (GPL)
Cross-platform
KGeography is a geography learning tool, which allows you to learn about the political divisions of some countries (divisions, capitals of those divisions and their associated flags if there are some). (GPL)
Linux - FreeBSD
Marble is a generic geographical map widget and framework that is meant to be used by KDE4 applications. (LGPL)
Linux - FreeBSD
3 applications