Freenet is a P2P file-sharing app, which also claims to provide anonymity. It is available for both Windows and Linux OSes. It features a new NIO technology that brings improved performance using less CPU and system resources. Individual nodes are now more efficient and the speed and routing of the entire network have significantly improved. We also implemented probabilistic caching, which further improves routing and lets Freenet store and find more data. There are some user interface improvements, more improvements to downloads of large files, a fix for the Heisenbug and tons of others. To download warp 2 www.freenetproject.org There are some interesting reads about freenet and other P2P proggys by Wired: "In response to recent threats to file traders, peer-to-peer developers say they're seeing an upsurge of interest in tools that purport to hide identities. The pressure comes from the Recording Industry Association of America's announcement Wednesday that it plans to sue hundreds of uploaders, and a recent court ruling requiring Verizon to reveal the names of subscribers accused of piracy." and NewScientist: "Interest in anonymous internet file-sharing networks has surged since the music industry revealed plans to sue individuals illegally offering copyrighted songs to other users. The Recording Industry Association of America (RIAA) announced on 25 June that it would start collecting information about "users who are illegally offering to 'share' substantial amounts of copyrighted music". The association said these users would face legal action and possible fines of up to $150,000 each. A US court cleared the way for the RIAA to pursue individual file-traders by ordering the service provider Verizon to reveal the identity of a handful of users earlier in June.".