It's a very efficient P2P client, that through a very simple interface, will allow us to connect to a server, performing searches (allowing us to filter the results depending on what kind of documents that we want to download), obtain the contents that we want and manage a list of friends with which we'll be able to share files directly. The Gnutella network is one of the most used nowadays, and one of the most popular clients to be able to share files over it, is without any doubt, LimeWire.