Astroweather
Toolkit for stargazing
Astroweather is weather forecast dedicated to weather for astronomical observations
It also provides services including astronomical event forecast, light pollution map, satellite images, positions of stars, planets, moons.
Unarchiver
Easy to use archive browser
Unarchiver is a utility that supports extracting files/folders from archives, browsing, viewing documents in archives and creating archives from files/folders.
Celestia
Real-time universe simulator
Celestia is a 3D astronomy software program created by Chris Laurel. The program allows users to virtually travel through a simulated version of our universe. Celestia can display objects of various scales using OpenGL.