Marble (software)

Marble
	Screenshot of Marble showing Europe
Developer(s)	KDE
Initial release	November 2006; 18 years ago
Stable release	23.08.4 / 7 December 2023; 11 months ago
Preview release	1.5.0 (February 6, 2013; 11 years ago) [±]
Repository	invent.kde.org/education/marble ;
Written in	C++ (Qt)
Operating system	Unix-like, Windows, Android
Available in	Multiple languages
Type	Virtual globe, route planning software
License	GNU LGPL
Website	marble.kde.org

Marble is a virtual globe application which allows the user to choose among the Earth, the Moon, Venus, Mars and other planets to display as a 3-D model. It is free software under the terms of the GNU LGPL, developed by KDE for use on personal computers and smart phones.^[2] It is written in C++ and uses Qt.

Marble is intended to be very flexible; beyond its cross-platform design, the core components can easily be integrated into other programs. It is designed to run without the need for hardware acceleration, but it can be extended to use OpenGL. An important user-experience objective being that the application start fairly quickly, it ships with a minimal but useful off-line dataset (5–10MB^{[citation needed]}).^[3]

Contributors have added support for on-line mapping sources such as OpenStreetMap and the ability to interpret KML files. Marble also provides route planning capabilities.^[4] A navigation mode called MarbleToGo was developed as part of Google Summer of Code 2010.^[5]^[6] It was later partially rewritten and renamed to Marble Touch.^[2]

Geothek is a fork of Marble adding a statistics module, pixel maps, and a 3D view. It is developed and used by Austrian publisher Ed. Hölzel as atlas software for classrooms.^[7]