Acme Bugei - Rennis Buchner, an American student in Japan has been writing about his experiences while in Japan as well as doing research and writing on the history of budo.
Kim Taylor's Big Page of Stuff - Information on The Iaido Newsletter, and on the Journal of Japanese Sword Arts, the Sei Do Kai dojo, the self defense program at the University of Guelph, and other martial art related information.
Kampai Budokai - Contains information on Niten Ichi Ryu kata (Musashi's art)
Aiki Batto - A system of sword exercises, developed by Swedish aikido and iaido teacher Stefan Stenudd.
Iaido Portal - A collection of links related to Iaido and Japanese swords. [English/French]
Iaido - Japanese Traditional Budo - English language web page with information about the history of Iaido , the ZNKR sei tei gata, and Hoki Ryu iaido.