Philosophy and thought

• Perseus Digital Library （Tufts University）　　　Ancient Greek and Rome (original texts with English translations)
• Stanford Encyclopedia of Philosophy (Stanford University)
• The Kyoto School Archive (Kyoto University)
• Database of Japanese Intellectual History （Touhoku University）　　　1966-2013
• Nihon Jurin Sōsho Full-text Database （Touhoku University）
• A Guide to Studies in Japanese Philosophy （Kyoto University）

Religion

General

• Okura Institute for the Study of Spirit and Culture
• Archival Research on Religious Periodicals in Modern Japan
• Religious Information Research Center（International Institute for the Study of Religions）
• Religious Law:Database of articles" （Association of the Religious Law）
• Japanese missionaries in colonial Korea（Shikoku Gakuin University）

Shintoism

• Database of Japanese Shrines Built Abroad durling the Japanese Imperial Period Revised and Augmented Version （Research Center for Nonwritten Cultural Materials, Kanagawa University）
• Kokugakuin University Digital Museum
  • Kokugaku Personalities Database
  • Shinto Jinja Database (Ancient)
  • Shinto Jinja Database (Modern)
• Archival Holdings on Japanese History （National Institute of Japanese Literature）
• How to Search Shinto Shrines (Research Navi) （National Diet Library）

Buddhism

• CBETA : The Tripitaka in classical Chinese(CBETA)
• INBUDS - Indian and Buddhist Studies Treatise Database
• The SAT Daizōkyō Text Database （University of Tokyo）
  • SAT Taishōzō Image DB
• "Shimpen Jodo Shu Daijiten" （Jodo Shu）
• Sanko Library
• Buddhist Temple Materials Database （Komazawa Gakuen）
• Archival Holdings on Japanese History （National Institute of Japanese Literature）
• Full-text database of writings on Jodo Shu
• A catalogue of writings on Zen （electric version）（Komazawa University）
• The Institute for Zen Studies　　　Rinzai and Ōbaku schools of Zen Buddhism
• The Bibliography of the Soto Zen Studies（Soto Institute for Buddhist Studies）　　　1868～2018.3
• Database of original texts and varying texts of Taishō Shinshū Daizōkyō （Tokyo Bunko）
• Full-text database of medieval Zen writings （International Research Center for Japanese Studies）
• Naritasan Library for Buddhism
• Old Buddhist Manuscripts in Japanese Collections （International College for Postgraduate Buddhist Studies）
• Buddhist scriptures database （Toyo Bunko）

Christianity

• Papal Encyclicals Online
• Vatican ARCHIVE
• Wordproject（（International Biblical Association）　Translation of multiple languages of the Bible
• St. Miki Library online catalog
• Imaikan Document Library （Imaikan Kyoyukai）　　　Missionary periodicals
• The Japan Association of Catholic Universities Cross-Search （Shirayuri College）
• Bible Text Search （Japan Bible Society）
• Laures Kirishitan Bunko Database （Sophia University）
• Japan Lutheran College & Seminary Library

Other religions

• Encyclopaedia of Islam　　　*Subscription database for on-site use only
• Encyclopedia Mythica
• Theoi Greek Mythology
• Bibliographical Database of Islamic and Middle East Studies in Japan 1868-2015 (BDIMEJ)（Documentation Center for Islamic Area Studies, Toyo Bunko ）
• Bibliography of Japanese Folklore （National Museum of Japanese History）　　　Folk religions, religious associations