A package for Emacs that fontifies Japanese text using Kuromoji tokenizer and part-of-speech tagger.
Download Kuromoji and put the jar file into some directory. Install Java if you haven't already.
Put this into your Emacs init file:
(require 'kuromoji)
(setq kuromoji-jar-path "/path/to/kuromoji-0.7.7.jar")
Enter some Japanese text into a buffer. Run the analyzer:
M-x kuromoji-start
To stop the Kuromoji process, either kill the *Kuromoji Process* buffer, or:
M-x kuromoji-stop