Aiki Batto
A system of sword exercises, developed by Swedish aikido and iaido teacher Stefan Stenudd.
Iaido - Japanese Traditional Budo
English language web page with information about the history of Iaido , the ZNKR sei tei gata, and Hoki Ryu iaido.
Iaido Portal
A collection of links related to Iaido and Japanese swords. [English/French]
Kampai Budokai
Contains information on Niten Ichi Ryu kata (Musashi's art)
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.