p7zip is a quick port of 7z.exe and 7za.exe (command line version of 7zip, see www.7-zip.org) for Unix.
7-Zip is a file archiver with highest compression ratio.
Since 4.10, p7zip (like 7-zip) supports little-endian and big-endian machines.
I feel that this project shows promise but definitely needs updates. Keep grindin' away!