Utilities
7Zip
7-Zip is a file archiver with a high compression ratio. It is capable of unpacking a variety of file types including RAR and ZIP and can also compress files in a wide variety of formats including 7z, Zip and TAR.
Screenshot 1
Screenshot 2
For more information and to download it, you can check its Website.
Stellarium
Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope. This is a really stunning program you could easily loose yourself in for hours.
Screenshot 1
Screenshot 2
Screenshot 3
Screenshot 4
Screenshot 5
For more information and to download it, you can check its
Website.