HOW TO WOW : Japanese - The free, fun way to learn Japanese online!
Japanese Language - Guide to Websites related to Japan and the Japanese language, including dictionaries, schools, pen pals, language lessons, and more.

Nihongo Japanese Lessons...Learn To Speak and Write Japanese Language For Real Communication...Kanji, Katakana and Hiragana Symbols...Free!

Knuckles in China Land is the coolest language learning tool. It is a Learn Japanese Game combined with a console-style RPG (Role-Playing Game). It is designed to make certain aspects of Japanese, German, and Indonesian language-learning a bit more enjoyable.
Phrasebase - Japanese -Free Sura Sura Kanji Quiz Web Software Interface