7-Zip
A file archiver designed originally for Microsoft Windows, and later made available to other computer operating systems.
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• By default, 7-Zip is used to create 7z format archives, with a .7z file extension. The core .7z compression stage uses a variety of algorithms, the most common of which are Bzip2 and LZMA (LZMA compression ratios tend to be very good, comparable to other high-gain compression formats) • Supported formats include ZIP, Microsoft cabinet (CAB) files, RAR, ARJ, Z, gzip, bzip2, LHA, tar, tar.gz, cpio, rpm and Debian deb archives. Versions of 7-Zip from 4.42 onwards also support ISO CD/DVD images. • For encryption, 7z archives support the 256-bit Rijndael AES cipher. Encryption can be enabled for both files and the 7z directory structure. When the directory structure is encrypted, users are be required to supply a password to see the filenames contained within the archive. • Its flexibly supports volumes of dynamically variable sizes, useful for backups on removable media such as writable CDs and DVDs. • Self-extraction of archives so that users who don't have the 7-Zip codec can still extract compressed files. |
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