The Japanese government is promoting the Open Data initiative, in which the government widely discloses public data in machine-readable formats and allows secondary use of the public data for profit-making or other purposes. This initiative has the goals of improving people's lives and stimulating corporate activities, thereby contributing to social and economic development of Japan. This website serves as a catalog of this Open Data, and is intended to provide information about public data available for secondary use. The website provides extensive search capabilities. To search for data, enter a keyword in the search box above and start your search. Please feel free to submit comments via the Requests and feedback page, if you have any comments on subjects such as the formats of provided data or disclosure of undisclosed data, or if you can provide any examples of, or ideas about, using Open Data. If you have any questions about how to use the site, please submit your questions via the Contact page.