Gaia Sky is a free, open-source and cross-platform (based on Java) 3D astronomy visualization software developed by ZAH, Universität Heidelberg from Germany. It is designed to map about 1 billion fixed stars in the Milky Way where our planet is located, based on the framework of ESA's Gaia mission, and supports VOTable, FITS, CSV and all formats supported by the STIL library.

3D World Map is a powerful and high-definition three-dimensional world map (Note that: it is a 'Map' rather than 'Earth'). It enables you to accurately find 269 countries and regions in the world on this realistic tellurion, and precisely displays the locations of more than 30000 cities around the world. Plus, it can calculate the distance between any two points on the earth, and all mountains, rivers, lakes and seas can be seen with a glance on this 3D tellurion.