Shareaza

Shareaza is a file sharing system that can harness the power of up to four separate peer-to-peer (P2P) networks, including eDonkey2000, Gnutella2, BitTorrent and Shareazas native network. Not only that, but Shareaza is completely gratis and does not have advertising or pop-ups. You can play multimedia files via Media option.In library can organize your folders.Can be used in normal mode or power mode.Can edit profile and choose a skin for interface.

The design is nice and the options are simple to use.Have security options were you can write the addresses who don not want to be accessed.Is working with tabs,so a big advantage is because you have a quick navigation.Get connected to the network,search for files and then get them.In preferences can check the folder were you want to save the programs .Can enter a URL and get file directly from that location.
Can limit sharing in hub mode and set limits per unique host.Can set the speed of the bandwidth.You need a fast connection to use the highest limits.Can use Shareaza by distance, with remote option.Enter username and password and than connect to computer from other location.Can create ghost files when deleting and allow other to browse share.