PowerPacker

PowerPacker (also spelled Power Packer) is a file compression utility and compressed file format for Amiga computers. It was developed by Nico François.

Identification
PowerPacker files apparently begin with ASCII "", followed by a two-digit version number. Known signatures are "" and "".

Sample files

 * Many, but not all, of the .pp files at http://cd.textfiles.com/amigagames/ag-199501/MultiMedia/Diskmags/ ...
 * PPUnpackWOS.lha → sf.pp

Software

 * aminet/util/arc → ppunpack*