Google Earth Pro - Google Earth Pro allows you fly anywhere around the earth to view satellite imagery, maps, 3D building, and terrain, from galaxies in outer space to the canyons of the ocean.

OpenSpace - OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.

SAS.Planet - SASGIS - Качаем карты и спутниковые снимки высокого разрешения из различных источников (google, яндекс.карт, kosmosnimki.ru, digitalglobe).

Celestia - Real-time 3D visualization of space

Google Earth Live Case - Pixel case with a companion live wallpaper

Stellarium - Stellarium is a free open source planetarium for your computer.