Japanese Notepad - Japanese editor for those who use Microsoft Windows Simplified Chinese Edition, and want to input Japanese characters including kana and kanji. - http://www.language-museum.com/jn
Microsoft Global IME - Input method for Internet Explorer, Outlook, and Word 2000 on Windows 95, 98, and NT 4. - http://www.microsoft.com/Windows/ie/Features/ime.asp
KanjiPad - A Unix program which does Japanese handwriting recognition. It uses the GTK toolkit for a GUI and Todd David Rudicks's algorithms from JavaDict for kanji recognition. - http://www.gtk.org/~otaylor/kanjipad/