The program uses the file networks Gnutella, BitTorrent, eDonkey2000, and Gnutella2 to give you access to anything and everything you can find within.
Shareaza Plus is a new version of the famous Shareaza, which promises to improve your connection and download speed.
It's worth noting that the program interface design is also improved, although it still looks more or less like the original. There is now support for various languages.
Its search tool is pretty powerful, allowing you to find just about any file. It supports downloading from multiple peers to accelerate the process, and doesn't include any kind of ads or spyware.