PMJS (Premodern Japan Studies) is a network of over 1000 scholars, students, and professionals who research premodern Japan. The main resource is the listserv, but PMJS papers also publishes various academic materials.
Digital Dictionary of Buddhism is an invaluable resource for Buddhist terms (not limited to Japan). Includes references to many Buddhist dictionaries and other references.
Digital Resources and Projects on East Asia created by Paula Curtis, this is a regularly updated list of English-language digital resources and projects on East Asia.
Rekihaku (National Museum of Japanese History) Databases includes databases of research essays, primary sources (textual and visual), maps, and more.
Japanese Historical Text Initiative lets you browse and search many classical and medieval texts in both English and Japanese.
The University of Tokyo’s Historiographical Institute Databases includes a range of different essential databases.
Nara National Research Institute for Cultural Properties hosts a wealth of databases on mokkan and archaeological finds
Senshū University Database of Ancient Eastern Eurasian People in Yamato includes both a database of people and a timeline.
