AsiaSound : The Koto: Includes history, Yatsuhashi-ryu and modern styles, audio samples, and an interview with composer and performer Ten Jinchi.
Kids Web Japan: Koto: Brief history of traditional instruments, parts of the koto with photographs, and an interactive virtual koto.
Koto no Koto: Includes a description and the history of the instrument, directories of musicians, performances, teachers, and courses, recordings, song index, books, supplies, message board, and links.
Koto Scores: Scores for learning the koto, using Hiro, Nogi, Gaku, and Western tunings. Includes MIDI samples, sound dictionary, and a score generator.
Koto: Japanese Traditional Musical Instrument: Koto information, sound clips, and instruction.
KotoWorld: Includes introduction, tuning, popular performers, discography, mailing list, and links.
O-Koto: Introduction to the instrument, Sakura Sakura, and a virtual koto [Flash required].
Washington Toho Koto Society: Washington, DC group of players and friends. Includes calendar of events, photo gallery, and CD ordering.