PAProtocol is a fork of PAFlow, an open source document tracking system hosted on sf.net. This fork born, because icecube is failed and source code released under gpl 2 mysteriously disappeared. This is a strange situation...
PAFlow is an open source document tracking system. The project is sponsored by the AIPA (Italian Authority for the Information Technology in the Public Administration) and it is carried on by Icube, an open source company in Pisa, Italy.