7-Zip - Free Zip Software

   7-Zip is a free file compression utility with excellent compression ratio, high overall performance and wide range of supported zip formats. It supports zipping and unzipping various kinds of zip formats such as 7z, xz, bzip2, gzip, tar, zip and wim, and supports unzipping rar, cab, chm, iso, lzh, msi (and more). According to 7-Zip, it provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip. There are many zip software packages available (such as WinRAR and WinZip). 7-Zip may not be perfect but is definitely one of the very best.

Key Features

• 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

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Freeware name:	7-Zip
Version:	9.20
Supported O/S:	Windows 2000/XP/Vista/7
Official Website:	http://www.7-zip.org/
Download page:	http://www.7-zip.org/download.html