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7z is a compressed archive file format that supports several different data compression, encryption and pre-processing algorithms. [1]

57 relations: Access control list, AdvanceCOMP, Advanced Encryption Standard, Archive file, Arithmetic coding, ARM architecture, Binary tree, Brute-force search, Burrows–Wheeler transform, Bzip2, Comparison of archive formats, Data compression, Data compression ratio, Data degradation, DEFLATE, Delta encoding, DOS, Dr. Dobb's Journal, Encryption, Entropy encoding, Exbibyte, File spanning, File system permissions, GNU Lesser General Public License, Gzip, Header (computing), Huffman coding, Itanium, Key stretching, Lempel–Ziv–Markov chain algorithm, List of archive formats, LZ77 and LZ78, Markov chain, Move-to-front transform, Multiple-image Network Graphics, NTFS, Open architecture, Open format, Passphrase, PDF, Portable Network Graphics, PowerPC, Prediction by partial matching, Public domain, Range encoding, RAR (file format), SHA-2, Solid compression, Tar (computing), Unicode, ..., Unix, UPX, X86, Xz, Zip (file format), Zlib, 7-Zip. Expand index (7 more) »

Access control list

An access control list (ACL), with respect to a computer file system, is a list of permissions attached to an object.

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AdvanceCOMP is a set of cross-platform command line data (re-)compression tools.

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Advanced Encryption Standard

The Advanced Encryption Standard (AES), also known by its original name Rijndael, is a specification for the encryption of electronic data established by the U.S. National Institute of Standards and Technology (NIST) in 2001.

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Archive file

An archive file is a file that is composed of one or more computer files along with metadata........

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Arithmetic coding

Arithmetic coding is a form of entropy encoding used in lossless data compression.

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ARM architecture

ARM, previously Advanced RISC Machine, originally Acorn RISC Machine, is a family of reduced instruction set computing (RISC) architectures for computer processors, configured for various environments.

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Binary tree

In computer science, a binary tree is a tree data structure in which each node has at most two children, which are referred to as the and the.

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Brute-force search

In computer science, brute-force search or exhaustive search, also known as generate and test, is a very general problem-solving technique that consists of systematically enumerating all possible candidates for the solution and checking whether each candidate satisfies the problem's statement.

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Burrows–Wheeler transform

The Burrows–Wheeler transform (BWT, also called block-sorting compression) rearranges a character string into runs of similar characters.

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bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm.

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Comparison of archive formats

There are many popular computer data archive formats for creating and maintaining archive files.

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Data compression

In signal processing, data compression, source coding, or bit-rate reduction involves encoding information using fewer bits than the original representation.

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Data compression ratio

Data compression ratio, also known as compression power, is a computer science term used to quantify the reduction in data-representation size produced by a data compression algorithm.

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Data degradation

Data degradation is the gradual corruption of computer data due to an accumulation of non-critical failures in a data storage device.

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In computing, Deflate is a lossless data compression algorithm and associated file format that uses a combination of the LZ77 algorithm and Huffman coding.

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Delta encoding

Delta encoding is a way of storing or transmitting data in the form of differences (deltas) between sequential data rather than complete files; more generally this is known as data differencing.

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DOS is a family of disk operating systems.

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Dr. Dobb's Journal


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In cryptography, encryption is the process of encoding a message or information in such a way that only authorized parties can access it and those who are not authorized cannot.

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Entropy encoding

In information theory an entropy encoding is a lossless data compression scheme that is independent of the specific characteristics of the medium.

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The exbibyte is a multiple of the unit byte for digital information.

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File spanning

File Spanning is the ability to package a single file or data stream into separate files of a specified size.

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File system permissions

Most file systems have methods to assign permissions or access rights to specific users and groups of users.

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GNU Lesser General Public License

The GNU Lesser General Public License (LGPL) is a free software license published by the Free Software Foundation (FSF).

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gzip is a file format and a software application used for file compression and decompression.

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Header (computing)

In information technology, header refers to supplemental data placed at the beginning of a block of data being stored or transmitted.

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Huffman coding

In computer science and information theory, a Huffman code is a particular type of optimal prefix code that is commonly used for lossless data compression.

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Itanium is a family of 64-bit Intel microprocessors that implement the Intel Itanium architecture (formerly called IA-64).

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Key stretching

In cryptography, key stretching techniques are used to make a possibly weak key, typically a password or passphrase, more secure against a brute-force attack by increasing the time it takes to test each possible key.

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Lempel–Ziv–Markov chain algorithm

The Lempel–Ziv–Markov chain algorithm (LZMA) is an algorithm used to perform lossless data compression.

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List of archive formats

This is a list of file formats used by archivers and compressors used to create archive files.

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LZ77 and LZ78

LZ77 and LZ78 are the two lossless data compression algorithms published in papers by Abraham Lempel and Jacob Ziv in 1977 and 1978.

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Markov chain

A Markov chain is "a stochastic model describing a sequence of possible events in which the probability of each event depends only on the state attained in the previous event".

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Move-to-front transform

The move-to-front (MTF) transform is an encoding of data (typically a stream of bytes) designed to improve the performance of entropy encoding techniques of compression.

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Multiple-image Network Graphics

Multiple-image Network Graphics (MNG) is a graphics file format, published in 2001, for animated images.

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NTFS (New Technology File System) is a proprietary file system developed by Microsoft.

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Open architecture

Open architecture is a type of computer architecture or software architecture that is designed to make adding, upgrading and swapping components easy.

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Open format

An open format is a file format for storing digital data, defined by a published specification usually maintained by a standards organization, and which can be used and implemented by anyone.

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A passphrase is a sequence of words or other text used to control access to a computer system, program or data.

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The Portable Document Format (PDF) is a file format developed in the 1990s to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

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Portable Network Graphics

Portable Network Graphics (PNG, pronounced or) is a raster graphics file format that supports lossless data compression.

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PowerPC (with the backronym Performance Optimization With Enhanced RISC – Performance Computing, sometimes abbreviated as PPC) is a reduced instruction set computing (RISC) instruction set architecture (ISA) created by the 1991 Apple–IBM–Motorola alliance, known as AIM.

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Prediction by partial matching

Prediction by partial matching (PPM) is an adaptive statistical data compression technique based on context modeling and prediction.

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Public domain

The public domain consists of all the creative works to which no exclusive intellectual property rights apply.

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Range encoding

Range encoding is an entropy coding method defined by G. Nigel N. Martin in a 1979 paper,, Video & Data Recording Conference, Southampton, UK, July 24–27, 1979.

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RAR (file format)

RAR is a proprietary archive file format that supports data compression, error recovery and file spanning.

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SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA).

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Solid compression

In computing, solid compression is a method for data compression of multiple files, wherein all the uncompressed files are concatenated and treated as a single data block.

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Tar (computing)

In computing, tar is a computer software utility for collecting many files into one archive file, often referred to as a tarball, for distribution or backup purposes.

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Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.

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Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.

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UPX (Ultimate Packer for Executables) is a free and open source executable packer supporting a number of file formats from different operating systems.

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x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.

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xz is a lossless compression program and file format which incorporates the LZMA/LZMA2 compression algorithms.

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Zip (file format)

ZIP is an archive file format that supports lossless data compression.

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zlib is a software library used for data compression.

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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".

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[1] https://en.wikipedia.org/wiki/7z

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