 7-Zip     .       7z       ,        30-50%  ,    ZIP .

    ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM  DEB.    ZIP  GZIP,  7-Zip   2-10 %   ,   PKZip  WinZip. ,    7z,   ,               7-Zip.
