p7zip for MorphOS is a port of the popular Windows decompression application 7-Zip. p7zip allows you to create compressed files, add and remove files as a compressed package, unpack packages, view package contents, and even preview them to see if they are working properly. The great thing is that p7zip supports a huge number of compression formats so it’s very flexible. The core 7z compression uses a variety of algorithms, the most common of which are bzip2, PPMd, LZMA2, and LZMA. LZMA uses an LZ-based sliding dictionary of up to 4 GB in size, backed by a range coder. The native 7z file format is open and modular. File names are stored as Unicode.