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7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [2] 7-Zip has its own archive format called 7z introduced in 2001, [12] but can read and write several others.
7-Zip includes read support for .msi, cpio and xar, plus Apple's dmg/HFS disk images and the deb/.rpm package distribution formats; beta versions (9.07 onwards) have full support for the LZMA2-compressed .xz format.
When comparing a LZMA 7z archive to a LZMA2 7z archive, for example, the decompression routines will differ. [citation needed] Several programs can create self-extracting archives. Among the Windows archivers are WinZip, WinRAR, 7-Zip, WinUHA, KGB Archiver, Make SFX, the built-in IExpress wizard, and others, including experimental ones.
PeaZip supports encryption [21] with AES 256-bit cipher in 7z and ZIP archive formats. In PeaZip's native PEA format, and in FreeArc 's ARC format, supported ciphers are AES 256-bit, Blowfish , [ 22 ] Twofish [ 23 ] 256 and Serpent 256 (in PEA format, all ciphers are used in EAX authenticated encryption mode ).
7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. The 7z format initially appeared as implemented by the 7-Zip archiver. The 7-Zip program is publicly available under the terms of the GNU Lesser General Public License.
Zipeg is an open source free software that extracts files from a wide range of compressed archive formats. Zipeg works under Mac OS X and Windows. It is best known for its file preview ability. It is incapable of compressing files, although it is able to extract compressed ones. Zipeg is built on top of the 7-Zip backend. Its UI is implemented ...