It is free and open-source software, developed originally by a small team at the Department of Physical Geography, University of Göttingen, Germany, and is now being maintained and extended by an international developer community.
Perangkat lunak ini gratis dan bersumber terbuka, awalnya dikembangkan oleh tim kecil di Departemen Fisika Geografi, Universitas Göttingen, Jerman, dan sekarang sedang dikelola dan diperluas oleh komunitas pengembang internasional.