minilop.net/ The Japanese Language

I'm learning Japanese, and I've found several sites to be really useful.

Japanese Writing (link last updated July 8, 2001; site apparently last updated in 1998)
Perhaps my favorite resource, here you'll find animated images illustrating the correct stroke order of all of the hiragana and katakana (and a tiny fraction of the kanji, too).
Jim Breen's WWWJDIC (link last updated July 8, 2001)
Breen offers a variety of resources, the most useful one being the English-to-Japanese and Japanese-to-English dictionary. Enter roomaji for a word, and you'll get a list of words that start with the characters you entered.
Japanese-Online
I found the beginner's lessons here to be a good place to start.
The Monash Nihongo ftp Archive
A very long list of software for just about every type of computing device I've ever heard of.
Learn Japanese Online
There's not a huge amount of information at this slightly amateur site, but if nothing else, the list of links is good.
Japanese Language Education System for Speech on an On-demand Network (LESSON/J)
I couldn't get the Java applet on this site to work on my computer, but I'm guessing it'd work fine on most computers running Windows, so I'm leaving the link here. Iwate University has created software to check your listening comprehension for spoken Japanese, which I have little doubt would be very cool if I could use it.
Robert Wells Pilot page
Wells has written a Kanji handwriting recognizer for the PalmPilot, but unfortunately there isn't much you can do with the recognized character after you've entered it. But he has information on J-OS and elisa, which let anyone with a PalmPilot view Japanese characters and convert words from roomaji to hiragana, katakana, or kanji.
YAMADA Tatsushi's Home page
Yamada is the author of J-OS, mentioned above, and several other Pilot applications.
Kanji Hanabi (link created July 8, 2001)
A nifty program for PalmOS, Kanji Hanabi is an easy-to-use replacement for kanji flashcards, containing also a kanji browser with all readings/meanings and animated demonstration of stroke order. Registration seems worthwhile: it gets you a database of 1,096 kanji rather than the trial version's 221, and costs $30. An educational discount of $10 is available to full-time students. I first read about Kanji Hanabi at Gate39's review.
KingKanji (link created July 8, 2001)
The best way to learn to write kanji is, presumably, to write a lot of it and be told whether you've written it correctly. KingKanji presents a word or phrase, you write the kanji and kana, and it shows you the correct writing. It doesn't, however, check your writing; you compare your own writing to the displayed example. At least you can get the stroke order by tapping the character you want to study, but I wish they'd add something like JStroke. A 30-day trial is available, and registration costs $24.95. I first read about KingKanji at Gate39's review.
jeKai (link created July 9, 2001)
jeKai is a project to create an online Japanese to English dictionary with plenty of example usages. They haven't gotten very far yet.
NEOS GOGOPen (link created July 9, 2001)
(Page is entirely in Japanese.) This seems to be handwriting recognition software for kanji and kana input on the Pilot.
Japanese <-> English Dictionary (link created January 24, 2003)