p7zip is a port of 7za.exe for Unix, Mac OS X, and
BeOS. 7za.exe is the command line version of
7-zip (7zip), a file archiver with a high compression
ratio.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
7za created bad archives when there were many executable files and the filter BCJ2 was used. This has been fixed. 7-Zip now supports the LZMA2 compression method, can update solid archives, and supports XZ archives.
This release supports LZMA compression for .ZIP archives. It can unpack UDF, XAR, and DMG/HFS archives. It now uses the BCJ/BCJ2 filters for executables.