Japanese

Declan's Japanese Language Software
[Win] Commercial software that teaches kanji, hiragana, and katakana. Also available are audio flashcards software and an English-Japanese dictionary.
http://www.declan-software.com/japanese

Drill The Kanji
An on-line Java flashcard program for studying and testing on kanji, including reading (on-yomi, kun-yomi) and meaning tests.
http://www.asahi-net.or.jp/~ik2r-myr/kanji/kanji1a.htm

Express Japanese Kanji Flashcards
Software for mobile/cell phones to aid students of Japanese learn Kanji, Hiragana and vocabulary.
http://www.expressjapanese.com

Gakusoft
[Win]Maker of KingKanji, a shareware Japanese / Kanji flashcard program.
http://www.gakusoft.com

gjiten
[Unix] A Japanese dictionary for Linux/Gtk, including Japanese to English, English to Japanese and Kanji.
http://gjiten.sourceforge.net/index.ja.php

jBrowse - Japanese Translation IE Plugin
[Win] A free plugin for Internet Explorer that injects furigana (phonetic hints) and word definitions in English into Japanese web pages.
http://www.jbrowse.com/products/jbrowse

JquickTrans
[Win] Software for learning Japanese and using it on their PCs.
http://www.coolest.com/jquicktrans/

Kana Sensei
[Win/MS-DOS] Japanese Language teaching software for beginners.
http://www.chachich.com/mdchachi/ksensei.html

KanaSensei
Small java applet that facilitates learning of Japanese.
http://kanasensei.sourceforge.net

Kanji Gold
[Win] Japanese kanji program.
http://web.uvic.ca/kanji-gold/

Kanji Trainer
Free online Kanji-Trainer.
http://www.kanji-trainer.org

Kanji Trainer Penpen
[Win] A freeware Japanese kanji and/or Chinese hanzi study game, similar to Tetris.
http://www.coolest.com/penpen/

KanjiQuick
A kanji dictionary software for Windows giving including 6500 Japanese characters and 47.000 compounds. Supports handwriting and animated stroke order display.
http://www.japanese.de/KanjiQuick_e.html

L-Ceps Personaltrainer Japanese
[Win, Mac, Linux] Multimedia Japanese language software for learners without or with little previous knowledge of the Japanese language.
http://www.l-ceps.com/en/japanese/learn-japanese-ptrainer.html

LexiKAN
Maker of flashcard software for learning to write and read Japanese Kanji and Kana.
http://www.lexikan.com

MOJI
A Japanese dictionary integrated to the Mozilla Firebird browser. Provides translations into English, French or German and includes a Kanji dictionary.
http://moji.mozdev.org

Practice Japanese
Japanese vocabulary, grammar lessons and more. Create and share your own lessons, or take those created by the community.
http://www.PracticeJapanese.com/

Practice Kanji
A free desktop Kanji flashcard program written in Java.
http://www.cynicalmonkey.com/practice-kanji/

QuickScholar.com
[Win] Software to help you learn Japanese, focusing on hiragana, katakana and kanji.
http://www.quickscholar.com/

Squidge Software
Software for learning the Japanese alphabet.
http://www.squidgesoftware.com

Train Your Brain
[Win] Generic flashcard software that can be used for a variety of languages.
http://www.digitaldominion.com

WaKan - Dictionary, Editor and Vocabulary
Freeware tool for Japanese and Chinese language learners for Windows. Includes character dictionary, word dictionary, editor with kanji conversion, printing (kanji cards, vocabulary, text with furigana), and vocabulary manager.
http://wakan.manga.cz/