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[ excerpt from developer's web site ] JZlib is a re-implementation of zlib in pure Java. The first and final aim for hacking this stuff is to add the packet compression support to pure Java SSH systems. - Why JZlib? Java Platform API provides packages 'java.util.zip.*' for accessing to zlib, but that support is very limited if you need to use the essence of zlib. For example, we needed to full access to zlib to add the packet compression support to pure Java SSH system, but they are useless for our requirements. The Internet draft SSH Transport Layer Protocol says in the section '4.2 Compression' as follows,

dpkg is the basis of the Debian package management system. It consists of low level programs to build, install, remove, and perform other maintenance tasks relating to Debian packages. Also included is the dselect front end to dpkg.

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.

LCAB is a small program that creates a Microsoft Cabinet (.CAB) file from a set of input files.

deb2targz is a very small shell script for converting Debian Linux .deb packages to a .tar.gz.

The XAR project aims to provide an easily extensible archive format. Important design decisions include an easily extensible XML table of contents for random access to archived files, storing the toc at the beginning of the archive to allow for efficient handling of streamed archives, the ability to handle files of arbitrarily large sizes, the ability to choose independent encodings for individual files in the archive, the ability to store checksums for individual files in both compressed and uncompressed form, and the ability to query the table of content's rich meta-data.

LHa for UNIX This unofficial version of lha is based on Version 1.00. This version supports extraction & archiving using -lh5- & -lh6- as well as extraction using -lh7- algorithm. All the bug reports on this version should be directed to Tsuguo Okamoto <tsugio@muc.biglobe.ne.jp>. If this software is included in a medium that may be obtained by users without network connectivity, please notify Tsuguo Okamoto in advance. Redistribution over networks is not restricted. According to Masafumi NAKANE <max@wide.ad.jp> the author gives permission to distribute this software on FreeBSD CDROM.

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.

A portable library and small utility that can be used to create, use, and modify Microsoft cabinet files (.cab) on any system.