PeaZip is a free and open-source file manager and file archiver for Microsoft Windows, Linux and BSD made by Giorgio Tani.
The Unarchiver
The Unarchiver is a free data decompression utility, which supports more formats than Archive Utility (formerly known as BOMArchiveHelper), the built-in archive unpacker program in OS X.
7-Zip
7-Zip is an open-source file archiver, an application used primarily to compress files.
Lempel–Ziv–Oberhumer
Lempel–Ziv–Oberhumer (LZO) is a lossless data compression algorithm that is focused on decompression speed.
Dar (disk archiver)
dar (disk archive) is a computer program, a command-line archiving tool intended as a replacement for tar in Unix-like operating systems.
UPX
UPX (Ultimate Packer for Executables) is a free and open source executable packer supporting a number of file formats from different operating systems.
Xz
xz is a lossless data compression program and file format which incorporates the LZMA/LZMA2 compression algorithms.
KGB Archiver
KGB Archiver is a file archiver and data compression utility based on the PAQ6 compression algorithm.
FreeArc
FreeArc is a free and open source file archiver developed by Bulat Ziganshin.
Archive Manager
Archive Manager (previously File Roller) is the archive manager of the GNOME desktop environment.
Lzip
lzip is a free, command-line tool for the compression of data; it employs the Lempel–Ziv–Markov chain algorithm (LZMA) with a user interface that is familiar to users of usual Unix compression tools, such as gzip and bzip2.
Zipeg
Zipeg is an open source free software that extracts files from compressed archives like ZIP, RAR, 7z and others, some of which are rarely used types.
Zlib
zlib is a software library used for data compression.
Bzip2
bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm.
Gzip
gzip is a file format and a software application used for file compression and decompression.
Ark (software)
Ark is a file archiver and compressor developed by KDE and included in the KDE Applications software bundle.
Lzop
lzop is a free software file compression tool which implements the LZO algorithm and is licensed under the GPL.
AdvanceCOMP
AdvanceCOMP is a set of cross-platform command line data (re-)compression tools.
LZ4 (compression algorithm)
LZ4 is a lossless data compression algorithm that is focused on compression and decompression speed.
Info-ZIP
Info-ZIP is a set of open-source software to handle ZIP archives.
XZ Utils
XZ Utils (previously LZMA Utils) is a set of free command-line lossless data compressors, including LZMA and xz, for Unix-like operating systems and, from version 5.
Liblzg
liblzg is a compression library for performing lossless data compression.
Libzip
libzip is an open source library for handling zip archives.
XAD (software)
The XAD system is an open source client based unarchiving system for the Amiga.
Xarchiver
Xarchiver is a front-end to various command line archiving tools for Linux and BSD operating systems, designed to be independent of the desktop environment.
Zstandard
Zstandard (or Zstd) is a lossless data compression algorithm developed by Yann Collet at Facebook.
Snappy (compression)
Snappy (previously known as Zippy) is a fast data compression and decompression library written in C++ by Google based on ideas from LZ77 and open-sourced in 2011.
Pngcrush
pngcrush is a free and open source command-line utility for optimizing PNG image files.
ZPAQ
ZPAQ is an open source (GPL) command line archiver for Windows and Linux.
Rzip
The rzip program is huge-scale data compression software designed around initial LZ77-style string matching on a 900 MB dictionary window, followed by bzip2-based Burrows–Wheeler transform (BWT) and entropy coding (Huffman) on 900 kB output chunks.