CJK is a macro package for LaTeX, providing simultaneous support for various Asian scripts in many encodings (including Unicode):
– Chinese (both traditional and simplified),
– Japanese,
– Korean and
– Thai.

A special add-on feature is an interface to the Emacs editor (cjk-enc.el) which gives simultaneous, easy-to-use support to a bunch of other scripts in addition to the above:
– Cyrillic,
– Greek,
– Latin-based scripts,
– Russian and
– Vietnamese.

See also cjk-fonts.

The author is Werner Lemberg.