Miniz is a lossless data compression library that implements the zlib (RFC 1950) and Deflate (RFC 1951) compressed data format specification standards. It supports the most commonly used functions exported by the zlib library.

Xarchiver is a front-end to various command line archiving tools. It uses GTK+ tool-kit and is designed to be desktop-environment independent. Supported formats are 7z, ARJ, bzip2, gzip, LHA, lzma, lzop, RAR, RPM, DEB, tar, and ZIP. It cannot perform functions for archives, whose archiver is not installed.

(N)compress provides the original compress and uncompress programs that used to be the de facto UNIX standard for compressing and uncompressing files. These programs implement a fast, simple Lempel-Ziv (LZW) file compression algorithm.

Extracts files out of Microsoft Cabinet (.cab) archives

UCL implements a number of compression algorithms that achieve an excellent compression ratio while allowing fast decompression. Decompression requires no additional memory.

Compared to LZO, the UCL algorithms achieve a better compression ratio but decompression is a little bit slower.

LZFSE is a Lempel-Ziv style data compression algorithm using Finite State Entropy coding. It targets similar compression rates at higher compression and decompression speed compared to Deflate using Zlib.

xdelta encodes only the differences between two binary files using the VCDIFF algorithm and patch file format described in RFC 3284. It can also be used to apply such patches. xdelta is similar to diff and patch, but is not limited to plain text and does not generate human-readable output.

FastJar is an attempt to create a much faster replacement for Sun's jar utility. Instead of being written in Java, FastJar is written in C.

Snappy is a compression/decompression library. It does not aim for maximum compression, or compatibility with any other compression library; instead, it aims for very high speeds and reasonable compression. For instance, compared to the fastest mode of zlib, Snappy is an order of magnitude faster for most inputs, but the resulting compressed files are anywhere from 20% to 100% bigger.

minizip-ng is a zip manipulation library written in C, forked from the zip manipulation library found in the zlib distribution.

Lhasa is a replacement for the Unix LHa tool, for decompressing .lzh (LHA / LHarc) and .lzs (LArc) archives. The backend for the tool is a library, so that it can be reused for other purposes. Lhasa aims to be compatible with as many types of .lzh/lzs archives as possible. It also aims to generate the same output as the (non-free) Unix lha tool, so that it will act as a free drop-in replacement.

This library allows reading and writing gzip-compressed JSON catalog files, which can be used to store GPG, PKCS-7 and SHA-256 checksums for each file.

Clzip is a compressor and decompressor for files in the lzip compression format (.lz), written as a single small C tool with no dependencies. This makes it well-suited to embedded and other systems without a C++ compiler, or for use in other applications like package managers. Clzip is intended to be fully compatible with the regular lzip package.

This package provides a simple zip library based on miniz.

Squashfs is a highly compressed read-only file system for Linux. It compresses files, inodes, and directories with one of several compressors. All blocks are packed to minimize the data overhead, and block sizes of between 4K and 1M are supported. It is intended to be used for archival use, for live media, and for embedded systems where low overhead is needed. This package allows you to create and extract such file systems.

Shrinkwrap provides a std::streambuf wrapper for various compression formats, including zstd, xz, gzip, and bgzf.

Libzip is a C library for reading, creating, and modifying zip archives. Files can be added from data buffers, files, or compressed data copied directly from other zip archives. Changes made without closing the archive can be reverted.

Libdeflate is a library for fast, whole-buffer DEFLATE-based compression and decompression. The supported formats are:

1. DEFLATE (raw)

2. zlib (a.k.a. DEFLATE with a zlib wrapper)

3. gzip (a.k.a. DEFLATE with a gzip wrapper)

lrzip is a compression utility that uses long-range redundancy reduction to improve the subsequent compression ratio of larger files. It can then further compress the result with the ZPAQ or LZMA algorithms for maximum compression, or LZO for maximum speed. This choice between size or speed allows for either better compression than even LZMA can provide, or a higher speed than gzip while compressing as well as bzip2.

Squashfs is a highly compressed read-only file system for Linux. It compresses files, inodes, and directories with one of several compressors. All blocks are packed to minimize the data overhead, and block sizes of between 4K and 1M are supported. It is intended to be used for archival use, for live media, and for embedded systems where low overhead is needed.

The squashfs-tools-ng package offers alternative tooling to create and extract such file systems. It is not based on the older squashfs-tools package and its tools have different names:

1. gensquashfs produces SquashFS images from a directory or gen_init_cpio-like file listings and can generate SELinux labels.

2. rdsquashfs inspects and unpacks SquashFS images.

3. sqfs2tar and tar2sqfs convert between SquashFS and tarballs.

4. sqfsdiff compares the contents of two SquashFS images.

These commands are largely command-line wrappers around the included libsquashfs library that intends to make SquashFS available to other applications as an embeddable, extensible archive format.

Both the library and tools operate deterministically: same input will produce byte-for-byte identical output.

XZ Utils is free general-purpose data compression software with high compression ratio. XZ Utils were written for POSIX-like systems, but also work on some not-so-POSIX systems. XZ Utils are the successor to LZMA Utils.

The core of the XZ Utils compression code is based on LZMA SDK, but it has been modified quite a lot to be suitable for XZ Utils. The primary compression algorithm is currently LZMA2, which is used inside the .xz container format. With typical files, XZ Utils create 30 % smaller output than gzip and 15 % smaller output than bzip2.

unrar-free is a free software version of the non-free unrar utility. This program is a simple command-line front-end to libarchive, and can list and extract not only RAR archives but also other formats supported by libarchive. It does not rival the non-free unrar in terms of features, but special care has been taken to ensure it meets most user's needs.

Lziprecover is a data recovery tool and decompressor for files in the lzip compressed data format (.lz). It can test the integrity of lzip files, extract data from damaged ones, and repair most files with small errors (up to one single-byte error per member) entirely.

Lziprecover is not a replacement for regular backups, but a last line of defence when even the backups are corrupt. It can recover files by merging the good parts of two or more damaged copies, such as can be easily produced by running ddrescue on a failing device.

This package also includes unzcrash, a tool to test the robustness of decompressors when faced with corrupted input.

Miniz is a lossless data compression library that implements the zlib (RFC 1950) and Deflate (RFC 1951) compressed data format specification standards. It supports the most commonly used functions exported by the zlib library.