Japan Center for Asian Historical Records （JACAR） digitalizes and provides access through the Internet to Asia-related records dating from the early Meiji era to the end of the Pacific War in the possession of important collecting institutions of pre-war official documents, The National Archives of Japan, Diplomatic Archives of the Ministry of Foreign Affairs of Japan, and National Institute for Defense Studies of the Ministry of Defense.

WorldCat is the world's largest network of library contents: more than 76 million of bibliographic records and more than 1.1 billion holdings' records. The number of bibliographic records are rising at a rate of 3.2 million records per year.
Materials in WorldCat have a wide variety of formats: books, serials, audio materials, scores, and maps etc. The languages of them are over 400.

The Cochrane Library contains high-quality, independent evidence to inform healthcare decision-making. It includes reliable evidence from Cochrane and other systematic reviews, clinical trials, and more. Cochrane reviews bring you the combined results of the world’s best medical research studies, and are recognised as the gold standard in evidence-based health care.

All visitors to The Cochrane Library can search the databases and access Abstract material.

researchmap is the only Web site that collects and provides scientific information on research institutes, researchers, research projects and research resources in Japan.

PubMed is a free resource that is developed and maintained by the National Center for Biotechnology Information (NCBI), at the U.S. National Library of Medicine (NLM), located at the National Institutes of Health (NIH).

PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.

PubMed Kyushu Univ. version makes it easy to get a fulltext by displaying "LinQ" button on a detaild screen.

KAKEN covers research conducted with grants-in-aid for scientific research provided by Japan's Ministry of Education, Culture, Sports, Science and Technology (MEXT) or the Japan Society for the Promotion of Science (JSPS). It contains records of the data made available at the start of each project (adopted topics), and outlines of the project deliverables (research reports and outlines of deliverables).

Institutional Repositories DataBase (IRDB) is a database that collects and provides metadata of the contents registered in institutional repositories in Japan.

Google Scholar provides a simple way to broadly search for scholarly literature. From one place, you can search across many disciplines and sources: peer-reviewed papers, theses, books, abstracts and articles, from academic publishers, professional societies, preprint repositories, universities and other scholarly organizations.