QGIS - QGIS is a desktop geographic information system, or GIS.
Stellarium - Stellarium is a free open source planetarium for your computer.
Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
KStars - KStars is a Desktop Planetarium for KDE.
Google Maps - Find local businesses, view maps and get driving directions in Google Maps.
SkyView - SkyView is powerful, easy-to-use app that answers questions about stars, constellations, and more.