Free Online Flash Cards

Check out Flash Card Exchange
Search for keywords like JLPT, Kanji, Kana, JLPT 4 vocabulary or whatever strikes your mind. You will find a bunch of Flash cards turning up for you to practice :)

FREE 500 Kanji flashcards

FREE 500 Kanji flashcards - Printable version is one of the best sites out there for testing or even learning Kanji. The printable version is available at http://nuthatch.com/kanjicards/
Have fun learning with the Flashcards!

Practice Kana

This is a list of online sites where you can practice your kana :) Have fun learning!

Hiragana Timer
Hiragana Drag-n-Drop Exercise
Hiragana and Katakana Practice - Real Kana
Hiragana and Katakana practice
Hiragana Exercises - Tae Kim's Japanese grammar guide
Hiragana Practice
ChipChat Hiragana Drill
ChipChat Katakana Drill
Hiragana Typing Game

Waken Software

I recently downloaded Wakan and it looks quite OK. It seems to be one of the nice and useful tools I have found online. Try WaKan Complete Installer - 11 MB. It's FREE!

About Japanese

Everything about Japanese - Contains almost everything about Japanese right from the Kana through culture till jobs in Japan. I would recommend this site any day for the beginners! :) You would not believe if I say I started off my Kana from this site. Their charts are awesome!