7-Zip v4.25



Release Date: July 31, 2005.

7-Zip is free file archiver with a high level of data compression. It supports several compression algorithms and lots of data formats, including native format 7z with highly efficient compression algorithm LZMA, as well as ZIP, RAR, CAB, ARJ, GZIP, BZIP2, TAR, CPIO, DEB and RPM files. The program has an open source, the most part of which is freely licensed under the GNU LGPL. The main platform is Windows (including Windows CE), which is available in two versions: with a graphic user interface and a command line version.


7-Zip is a file archiver with a high compression ratio. With these tools you can easily send large quantities of information or open compressed files you receive without hassle.

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. 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

Compression ratio results are very dependent upon the data used for the tests. Usually, It compresses to 7z format 30-70% better than to zip format. And 7-Zip compresses to zip format 2-10% better than most of other zip compatible programs.

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.

By default, 7-Zip creates 7z-format archives with a .7z file extension. Each archive can contain multiple directories and files. As a container format, security or size reduction are achieved using a stacked combination of filters. These can consist of pre-processors, compression algorithms, and encryption filters.



SHA256: c4c3b2bc2a5423a7db3edc9c52e304869ab732cc1a44df8ab64fad5fe4aeaf08

License: LGPL



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