p7zip is a port of 7za.exe for POSIX systems like Unix (Linux, Solaris, OpenBSD, FreeBSD, Cygwin, AIX, ...), MacOS X and also for BeOS and Amiga.
7za.exe is the command line version of 7-zip, see http://www.7-zip.org/.
7-Zip is a file archiver with highest compression ratio.
Since 4.10, p7zip (like 7-zip) supports little-endian and big-endian machines.
J7zip is a JAVA port of 7zr.exe
2007-02-04 : support BCJ filter
2006-12-10 : First public version (support only extracting files compressed with LZMA and BCJ2 filter)
TODO : creating archives, support encryption, support multi-thread, ...
For the fun, I also port the LZMA Decoder from LZMA SDK 4.03 to JAVA.
2005-09-11 : JAVA port of LZMA Encoder and Decoder from LZMA C# SDK 4.23.
2006 : Now Igor Pavlov gives JAVA LZMA SDK with its LZMA SDK (C, C++, C# and JAVA)
To download sources or binaries packages for p7zip or J7Zip, go to http://sourceforge.net/projects/p7zip/
Fedora Core 1, 2 and 3 :
Gentoo Linux :
p7zip Public Forums
7zip Public Forums
7zip official webpage
Last Modified: 21 Feb 2009