Suggestions for cjk
The following packages have something in common with the package cjk. The packages are ordered in decreasing similarity.
- cjk-fonts: Chinese/Japanese/Korean bitmap fonts
 - zxjafbfont: Fallback CJK font support for xeCJK
 - zhmcjk: Simplify configuration of CJK installations for Chinese
 - ptex-fontmaps: Font maps and configuration tools for Japanese/Chinese/Korean fonts with (u)ptex
 - cjkpunct: Adjust locations and kerning of CJK punctuation marks
 - cjk-ko: Extension of the CJK package for Korean typesetting
 - japanese-otf-uptex: Support for Japanese OTF files in upLaTeX
 - japanese-otf: Advanced font selection for platex and its friends
 - jfontmaps: Font maps and configuration tools for Japanese fonts
 - uptex: Unicode version of pTeX
 - pxufont: Emulate non-Unicode Japanese fonts using Unicode fonts
 - zhmetrics: TFM subfont files for using Chinese fonts in 8-bit TeX
 - gckanbun: Kanbun typesetting for (u)pLaTeX and LuaLaTeX
 - pxjodel: Help change metrics of fonts from japanese-otf
 - hlatex-fonts: A collection of Korean (Hangul) fonts
 - jlreq-deluxe: Multi-weight Japanese font support for the jlreq class
 - xecjk: Support for CJK documents in XeLaTeX
 - haranoaji-extra: Harano Aji Fonts
 - haranoaji: Harano Aji Fonts
 - nanumtype1: Type1 subfonts of Nanum Korean fonts
 - baekmuk: Baekmuk Korean TrueType fonts
 - thaispec: Thai Language Typesetting in XeLaTeX
 - hlatex: Support for the Korean language
 - zxjafont: Set up Japanese font families for XeLaTeX
 - fandol: Four basic fonts for Chinese typesetting
 - zhmetrics-uptex: Chinese font metrics for upTeX
 - kanbun: Typeset kanbun-kundoku with support for kanbun annotation
 - fonts-arundina: DejaVu-compatible Thai fonts
 - kotex-utf: Typeset Hangul, coded in UTF-8
 - thailatex: Typeset Thai texts with standard LaTeX classes
 - thaifonts-arundina: DejaVu-compatible Thai fonts