The Kanji Master Program - Site devoted to the study of kanji in the light of their history and place within Chinese and Japanese civilization. - http://www.kotoba-project.com/
Japanese wa, mo, ga, wo, na, no - Scholarly study of the syntax of the six most common post-nominal particles in Japanese, by Frederik Kortlandt. - http://www.kortlandt.nl/publications/art191e.pdf
The Origins of Kanji in Japan - The history of kanji and how it came to be used in Japanese writing. - http://www.logoi.com/notes/kanji_origins.html
Gender Disctinction in Japanese - Essay on "Manifestations of Gender Distinction in the Japanese Language" - http://www.coolest.com/jpfm.htm
Classical Japanese Language and Literature - This site teaches classical Japanese through poems and extracts from literary classics. Grammatical points are explained. - http://www.classical-japanese.net/
Osaka Shoin Women's College - The Japanese Language Research Center. - http://www.age.ne.jp/x/oswcjlrc/index-e.htm
Kanji.com - Writings on the kanji character system. - http://www.kanji.com/