Zip is a file archiver supporting WinRAR

                                    WinRAR

       7-Zip  is  a  file  archiver  supporting  7z  (that 

        implements LZMA compression algorithm
       featuring very high compression ratio)

      , LZMA2, XZ, ZIP, Zip64, CAB, RAR (if  the  non-free

       p7zip-rar  package  is  installed), ARJ, GZIP, BZIP2, TAR,

      CPIO, RPM, ISO, most filesystem
       images and DEB formats.

       Compression ratio in the new 7z  format  is  30-50%  better  than
       ratio in ZIP format.

       7z  uses  plugins  to  handle archives,

        so it might be slightly slower than 7za(1) but can
       handle more archive formats.

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