7zip free file archiver software

[immortal]

The main features of 7-Zip

    High compression ratio in 7z format with LZMA and LZMA2 compression
    Supported formats:
        Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
        Unpacking only: ARJ, CAB, CHM, CPIO, CramFS, DEB, DMG, FAT, HFS, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, RAR, RPM, SquashFS, UDF, VHD, WIM, XAR and Z.
    For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
    Strong AES-256 encryption in 7z and ZIP formats
    Self-extracting capability for 7z format
    Integration with Windows Shell
    Powerful File Manager
    Powerful command line version
    Plugin for FAR Manager
    Localizations for 79 languages

Download at http://www.7-zip.org/download.html

http://www.youtube.com/watch?v=djfvopgZSn0