1. National Institute of Informatics. NII Institutional Repositories Program,
http://www.nii.ac.jp/irp/en/
2. Folio direct,
http://www.foliodirect.net/
3. SourceForge,
http://sourceforge.net/
4. Github,
https://github.com/
5. Keidanren,
http://www.keidanren.or.jp/japanese/policy/2005/039/index.html
(in Japanese)