7-Zip is open source software. Most of the source code is under the GNU LGPL license. The unRAR code is under a mixed license: GNU LGPL + unRAR restrictions. Check license information here: 7-Zip license.
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.
7-Zip Features :
- High compression ratio in new 7z format with LZMA compression
Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
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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File Compression Formats In 7-Zip
With a variable dictionary size of up to 4 GB, compression speed of around 1 MB/s on 2 GHz CPU, and a decompression of about 10-20 MB/s on 2 GHz CPU, 7-Zip deals with a huge range of file compressions. Some supported formats… Read more on File Compression 7 Zip
Installing And Using Your WinZip Download by ABradney-George
WinZip's popularity and features make it a great choice for file compression and extraction solutions. Once you have decided you want this software, it is a simple matter of downloading WinZip and installing it. How… Read more on Winzip Download
Who Should Download 7-Zip? by ABradney-George
7-Zip is an open source file compression and extraction program that has gained popularity for advanced functions not generally expected in freeware. But just because 7-Zip is free does not mean everyone will need it. So who… Read more on Download 7 Zip
Using The 7z File Format In 7-Zip by ABradney-George
7-Zip creator Igor Pavlov has gone beyond just creating a powerful free compression tool - he has also created an archive file format to go with it. Designed for best use within 7-Zip, the 7z format provides solid file compression… Read more on 7 Z
7-Zip: The Free File Compression Alternative by ABradney-George
File compression is a useful function for both backup and sharing options because it allows lots of data to be stored in a relatively small format. While WinRAR and WinZip are two of the most established utilities… Read more on 7 Zip
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