Aikido.com

Lineage of Morihei Ueshiba, dojo search, events calendars, discussion areas, publications and links.
http://www.aikido.com/

AikiWeb Aikido Information

A large and highly organized resource for Aikido information including dojo listings, articles, and discussion forums. Maintained by Jun Akiyama.
http://www.aikiweb.com/

AikidoKids

Provides resources and information for Aikido programs for kids worldwide. Games listing, instructor directory, equipment suggestions, and curriculum ideas are available on the site.
http://www.aikidokids.com

Aikido FAQ

An encyclopedic source for Aikido information provided by Kjartan Clausen.
http://www.aikidofaq.com/

Aikido Dictionary

Compilation with kanji as graphics (no JIS capable browser required)
http://www.asahi-net.or.jp/~dp9k-kwhr/dice.htm

Aikido.net

Includes animations and explanations of various techniques, user-submitted event announcements, message board, email and related web services, and a dojo search feature for Japan. In English and Japanese [requires Flash].
http://www.aikido.ne.jp/english/

The Aikido Dojo Guide

Resource for dojos worldwide. Provided by the author of the Aikido FAQ.
http://www.aikidofaq.com/guide/