p7zip is a Unix port of 7-Zip, a file archiver with high compression
ratio (www.7-zip.org) with lots of features:
* 7-Zip is free software distributed under the GNU LGPL
* High compression ratio in new 7z format with LZMA compression
o Unicode file names
o Variable dictionary size (up to 4 GB)
o Compressing speed: about 1 MB/s on 2 GHz CPU
o Decompressing speed: about 10-20 MB/s on 2 GHz CPU
* Supported formats:
o Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
o Unpacking only: RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB
and NSIS
* For ZIP and GZIP formats 7-Zip provides compression ratio that is
2-10 % better than ratio provided by PKZip and WinZip
* Self-extracting capability for 7z format
PackdDir creates and unpacks PackdDir archives,
which are used in Quake (I and II) and others.
par2cmdline-tbb is the tbb version of the par2cmdline tool.
par2cmdline is a program 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.
The interface is like zipfile extension included in regular
python distribution.
Unfoo is a tiny sh(1) wrapper to simplify decompression of files.
Supported archive types: tar, gzip, bzip2, ace, rar, zip, 7z.
Mark Adler, maintainer of popular zlib library has released a multicore
capable Parallel Implementation of GZip, nicknamed PIGZ. Version 1.5
implements nearly all of gzip's functionality, including decompression
of .gz and .Z (Unix compress) files.
Parallel XZ is a compression utility that takes advantage of running LZMA
compression of different parts of an input file on multiple cores and
processors simultaneously.
Its primary goal is to utilize all resources to speed up compression time
with minimal possible influence on compression ratio.
Lhasa is a command line tool and library for parsing LHA archives.
Currently it is only possible to decompress archives. Compressing
LHA archives may be an enhancement for future versions. The aim is
to be compatible with as many different variants of the LHA file
format as possible, including LArc (.lzs) and PMarc (.pma).
The command line tool aims to be interface-compatible with Unix LHA
tool (command line syntax and output), for backwards compatibility
with tools that expect particular output.
Secure Tar (star) doesn't create encrypted tape archives (tar files)
yet, but it can encrypt/decrypt files only using multiple blocksizes,
and keysizes using the AES algorithm Rijndael. Once the standalone app
is stable, then it will be incorporated with tar. The encryption is
exported under exemption TSU 740.13.
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.