I’ve created a flashcard program that can drill you based on the sound, romaji, or the writing. You will need to install Microsoft Silverlight (which is Microsoft’s version of Adobe Flash). There’s also a printable table that you can print out and fill in the characters.

Here’s a link:

http://www.thejapanesetutor.com/language/hiragana.aspx

Click on flashcards near the top to get to the flashcards program. The quiz program is a multiple-choice style quiz for you to test your knowledge!

Let me know if anyone finds this useful or if there are any other suggestions!

http://www.manythings.org/japanese/news/

You’re given around forty seconds to determine what the kana/kanji says and select the correct word in English. The katakana is obviously easiest for English-speakers, since the words are all English or derived from a western language, written in katakana.

The kanji is also easy to grasp, since you can know the meaning of a kanji independently of its reading. When I come across kanji that I don’t know, I look them up with the useful tool linked below. The hiragana is probably the hardest game, for me at least, since it depends more on vocabulary than the other two. Umineko (うみねこ/海猫) is written in both hiragana and kanji as “sea cat”, but is actually a type of seagull; if you didn’t know that and it came up, you would just have to hope that no other sea or cat-related words came up. The game tends to put similar meanings in the multiple choice, so that happens fairly often.

http://jisho.org/kanji/radicals/