日本国立情報学研究所（Japan National Institute of Informatics，簡稱NII）

e-Stat is a portal site for Japanese Government Statistics.

Database of Grants-in-Aid for Scientific Research(KAKEN) is a public database which includes information on adopted projects, assessment, and research achievements from the Grants-in-Aid for Scientific Research(KAKENHI) Program.

The National Institute of Informatics (国立情報学研究所, Kokuritsu Jōhōgaku Kenkyūjo, NII) is a Japanese research institute located in Chiyoda, Tokyo, Japan.

非常著名的OA数据库，主要收录学会、研究报告、摘要等。JSME的会志也收录在系统收录期刊、会议录、报告、日本科学技术报告等，可以按文献类型和题名字顺两种方式浏览。