Winny (also known as WinNY) is a Japanese peer-to-peer (P2P) file-sharing program which claims to be loosely inspired by the design principles behind the Freenet network, which keep user identities untraceable. While Freenet was implemented in Java, Winny was implemented as a Windows C++ application. Like Freenet, each client functions as a node. Initially, a search will return few results, but one can set up "clusters" based on certain keywords, and over time, your client will learn the best route to obtain the information sought.