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paq is a family of archivers with the best lossless compression ratios now available across a wide variety of test data, according to several benchmarks. A comparison of paq to other compression methods, on a 2GHz T3200, when compressing a large text file: Format Size Time (sec) Memory comp decomp ----------- --------- -------------- ------- Uncompressed 3,152,896 compress 1,319,521 1.6 0.2 .1 MB gzip -9 1,022,810 0.7 0.1 .1 MB bzip2 -9 860,097 0.6 0.4 5 MB p7zip (7z) 824,573 1.5 0.1 195 MB xz -6 822,016 ? ? ? zpaq c1 (fast) 806,959 2 2 38 MB zpaq c2 (mid) 699,191 8 8 112 MB zpaq c3 (max) 644,190 20 20 246 MB The port uses the open ZPAQ specification, and contains: a public-domain C++ API for reading and writing ZPAQ compressed data to or from files or objects in memory; serial and multi-threaded archivers; extra preprocessors for compression; and stubs for creating self-extracting archives.

NWReckDum is Quake PACK file format (.pak) manipulator. It allows one to list, extract, and create packed game data files easily from command line.

This is the port of the Microsoft Tape Format / NT Backup reader. It is in a "work for me" state.

CamlBZ2 provides OCaml bindings for libbz2 (AKA bzip2), a popular compression library which typically compresses better (i.e., smaller resulting files) than gzip. Using CamlBZ2 you can read and write compressed "files", where files can be anything offering an in_channel/out_channel abstraction (files, sockets, ...). Also, with CamlBZ2 you can compress and decompress strings in memory using the bzip2 compression algorithm.

This Objective Caml library provides easy access to compressed files in ZIP and GZIP format, as well as to Java JAR files. It provides functions for reading from and writing to compressed files in these formats.

This package handles LZF de/compression.

Rar is a powerful and effective archiver, which was created by Eugene Roshal and became rather popular quite fast. This extension gives you possibility to read Rar archives.

PEAR::File_Archive is strongly object oriented. It makes it very easy to use, writing simple code, yet the library is very powerful. It lets you easily read or generate tar, gz, tgz, bz2, tbz, zip, ar (or deb) archives to files, memory, mail or standard output. See http://poocl.la-grotte.org for a tutorial.

The PHP_Archive package allows creation of self-contained cross-platform PHP libraries or applications, similar to Java jar files.

Command-line utilities to: * create StuffIt (.sit) and Zip (.zip) archives * encode files into uuencode, BinHex, and MacBinary formats * expand StuffIt and Zip archives * expand encrypted StuffIt archives * decode or expand: Compact Pro, zip, arc, arj, lha (lzh), rar, gzip, UNIX compress, uuencode, BinHex, btoa, MIME, tar, MacBinary, segmented StuffIt, PrivateFile, bzip2, and AppleSingle.