MLdonkey is a multi-platform multi-networks peer-to-peer client. Originally, it was the first open-source client to access the eDonkey network. The protocol was reverse-engineered using an efficient protocol sniffer, Pandora.

Apart from eDonkey , it also supports several large networks, such as Overnet , Bittorrent , Gnutella (Bearshare, Limewire,etc), Gnutella2 (Shareaza), Fasttrack (Kazaa, Imesh, Grobster), Soulseek (beta), Direct-Connect (alpha), and Opennap (alpha). Networks can be enabled/disabled, searches are performed in parallel on all enabled networks, but each file is only downloaded from one network (wait for next release !), but from multiple clients concurrently.

MLdonkey runs as a daemon on the computer. It can be controlled using several interfaces: the simplest one is telnet (telnet 127.0.0.1 4000), a more interesting one is a WEB server (http://127.0.0.1:4080/), and a binary protocol allows access using more elaborate Graphical Interfaces (see the GUIs available on your system at the bottom of the page). MLdonkey comes by default with a GTK interface. All these interfaces can be used locally, or remotely (after disabling security restrictions). MLdonkey is written in Objective-Caml , a powerful language that runs on most Operating Systems.