xMule (short for "X11 Mule") is a discontinued free client for the eDonkey peer-to-peer file sharing network intended to bring it to virtually all the major Unix platforms, with a particular emphasis on Linux. xMule was coded in C++ using wxWidgets and released under GNU General Public License v2. xMule is a fork of lMule, itself a port of eMule. aMule is a fork of xMule.