Poisoned is a free peer-to-peer file sharing client for Mac OS X, whose name is an allusion to the German word Gift (poison in English). Started by Silvio Rizzi on May 26 2003, it is a front-end to giFT, and currently supports the OpenFT, FastTrack, Gnutella and Ares protocols. For access to these typically separate networks, Poisoned uses third-party plugins. It is available under the GNU General Public License. It is not currently a Universal binary.
Another peer-to-peer software, XFactor had lifted portions of Poisoned's Source Code without following the GNU General Public License guidelines. Since disclosure XFactor has removed the offending code.