Kanji no Renshu
- Quizzes for knowledge of Chinese characters.
- http://www.lang.nagoya-u.ac.jp/~mohso/kyozai98/KANJI/top.html

The Kanji Site
- Guide to hundreds of Chinese characters, with testing, search function and other features. Especially useful for studying kanji for the Japanese Language Placement Test. Works with non-Japanese operating systems.
- http://www.kanjisite.com/

JLPT vocabulary lists
- Complete vocabulary lists for the Japanese Language Proficiency Test (JLPT), levels 1 to 4. Translations are not included.
- http://www.thbz.org/kanjimots/jlpt.php3

Kan-Ken
- The official homepage of the Japan Kanji Aptitude Testing Foundation, which tests knowledge of Chinese characters used in the Japanese language.
- http://www.kanken.or.jp/