is a Virtual Globe and World Atlas that you can use to learn more about Earth: You can pan and zoom around and you can look up places and roads. A mouse click on a place label will provide the respective Wikipedia article. This release updates Marble to the latest version. It’s packaged in PortableApps.com Format so it can easily integrate with the PortableApps.com Platform. And it’s open source and completely free. Marble Portable is packaged in a PortableApps.com Installer so it will automatically detect an existing PortableApps.com installation when your drive is plugged in. It supports upgrades by installing right over an existing copy, preserving all settings. And it’s in PortableApps.com Format, so it automatically works with the PortableApps.com Platform including the Menu and Backup Utility. Marble offers different thematic maps: A classroom-style topographic map, a satellite view, street map, earth at night and temperature and precipitation maps. All maps include a custom map key, so it can also be used as an educational tool for use in class-rooms. For educational purposes you can also change date and time and watch how the starry sky and the twilight zone on the map change. * Marble is a light weight generic geographical map component for use in your own Qt 4.x / C++ application. The MarbleWidget provides a ready-made solution for displaying maps and locations. This includes support for GPS tracking and importing KML/GPX files. * Marble runs decently even without hardware acceleration. It just uses Qt’s Arthur API as a painting backend. Optional OpenGL support is being worked on. Source.