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Winny

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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.

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Winny

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v2.0β7.1

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Screenshot of Winny

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2003-11-11

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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. The software takes its name from WinMX, where the M and the X are raised one letter in the Latin alphabet, to N and Y. According to a 2006 report by the Recording Industry Association of Japan, upwards of three million people had tried Winny, and it has alternated with WinMX as the most popular file-sharing program in Japan. 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. The software was developed by Isamu Kaneko, who is a research assistant in graduate course of computer engineering at the University of Tokyo in Japan. He was also once a researcher at the Japan Atomic Energy Research Institute. Kaneko originally anonymously announced his intent of developing the software on the Download Software board of the popular 2channel (2ch for short) Japanese bulletin board site. Since 2ch users often refer to anonymous users by their post numbers, Kaneko came to be known as "Mr. 47" ("47-Shi", or 47氏 in Japanese), or just "47". On November 28, 2003, two Japanese users of Winny, Yoshihiro Inoue1, a 41 year-old self-employed businessman from Takasaki, Gunma Prefecture and an unemployed 19-year-old from Matsuyama, were arrested by the Kyoto Prefectural Police. They were accused of sharing copyrighted material via Winny and admitted to their crimes. Shortly following the two users' arrests, Kaneko also had his home searched and had the source code of Winny confiscated by the Kyoto Police. On May 10, 2004, Kaneko was arrested for suspected conspiracy to commit copyright violation by the High-tech Crime Taskforce of the Kyoto Prefectural Police. Kaneko's arrest caused an uproar in communities on the Internet, including 2ch, citing it as an unjust arrest. A website set up to raise money for the defense of Kaneko raised over 11 million yen (about 97,000 US$ on May 23, 2004) within two weeks. Kaneko was released on bail on June 1, 2004. The court hearings started in September 2004 at Kyoto district court. On December 13, 2006, Kaneko was convicted of assisting copyright violations and sentenced to pay a fine of 1.5 million yen (about 13,200 US$). He is expected to appeal the ruling. After Winny's development was stopped, Share was started by an anonymous Japanese engineer to pick up where Winny left off.