7 zip

7 zip is my favorite compressor utility program. With this little program compression ratio depend upon the data used for. If you compress to *.7z format, it is 30-70% better than to usual zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

This is fully freeware. That means you can use this software in your business or home use. You don't need to register or pay for 7-Zip. But if you like you may donate some for the future developing.

The main features of 7-Zip:

* High compression ratio in new 7z format with LZMA compression
* Supported formats:
o Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
o Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, 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 74 languages

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