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LASzip is a compression library for compressing ASPRS LAS format data. It has been provided as an LGPL-licensed stand-alone software library to allow other softwares that handle LAS data to read and write LASzip-compressed data. The BSD-licensed libLAS and the LGPL-licensed LASlib can take advantage of LASzip to read and write compressed data. LASzip is completely lossless. It compresses bulky LAS files into compact LAZ files that are only 10-20 percent of the original size, accurately preserving every single bit.

A multi-threaded bzip2/bunzip2 filter that doesn't depend on the lseek() system call and so isn't restricted to regular files.

Libarchive is a programming library that can create and read several different streaming archive formats, including most popular tar variants and the POSIX cpio format.

File Roller is an archive manager for the GNOME environment. It is only a front-end (a graphical interface) to archiving programs like tar and zip. The supported file types are: * Tar archives uncompressed (.tar) or compressed with gzip (.tar.gz , .tgz), bzip (.tar.bz , .tbz), bzip2 (.tar.bz2 , .tbz2), compress (.tar.Z , .taz), lzop (.tar.lzo , .tzo) * Zip archives (.zip) * Jar archives (.jar , .ear , .war) * Lha archives (.lzh) * Rar archives (.rar) * Single files compressed with gzip, bzip, bzip2, compress, lzop File Roller also has a document viewer based on bonobo that lets you view files of any type for which you have a viewer. Former WinZip users may find this program useful. It serves the same purpose.

Dynamite is a tool and library for decompressing data compressed with the PKWARE Data Compression Library.

LZ4 is a very fast lossless compression algorithm, providing compression speed at 400 MB/s per core, scalable with multi-cores CPU. It also features an extremely fast decoder, with speed in multiple GB/s per core, typically reaching RAM speed limits on multi-core systems. A high compression derivative, called LZ4_HC, is also provided. It trades CPU time for compression ratio. The libraries are BSD licensed, and the binaries are GPLv2.

Libpar2 is a library for manipulating par2 files, extracted from par2cmdline Libpar2 is a library for creating and using PAR2 files to detect damage in data files and repair them if necessary. It can be used with any kind of file. Par files are especially popular on Usenet.

librtfcomp is a library for handling compressed RTF documents.

This package includes a thin wrapper library of LZMA SDK.

PHP extension that implements the LZ4 compression algorithm - an extremely fast lossless compression algorithm.