Suggestions for langcode

The following packages have something in common with the package langcode. The packages are ordered in decreasing similarity.

• plainpkg: A minimal method for making generic packages
• pdftexcmds: LuaTeX support for pdfTeX utility functions
• localloc: Macros for localizing TeX register allocations
• fltpoint: Simple floating point arithmetic
• youngtab: Typeset Young-Tableaux
• hologo: A collection of logos with bookmark support
• iftex: Am I running under pdfTeX, XeTeX or LuaTeX?
• catcodes: Generic handling of TeX category codes
• namedef: TeX definitions with named parameters
• expkv-bundle: An expandable key=val implementation and friends
• expkv-cs: Define expandable key=val macros using expkv
• lipsum: Easy access to the Lorem Ipsum and other dummy texts
• chinese-jfm: Luatexja-jfm files for Chinese typesetting
• schemata: Print topical diagrams
• polexpr: A parser for polynomial expressions
• luatexja: Typeset Japanese with Lua(La)TeX
• pdfmsym: PDF Math Symbols — various drawn mathematical symbols
• tokcycle: Build tools to process tokens from an input stream
• lparse: A Lua module for parsing key-value options
• lua-visual-debug: Visual debugging with LuaLaTeX
• witharrows: “Aligned” math environments with arrows for comments
• chemfig: Draw molecules with easy syntax
• commado: Expandable iteration on comma-separated and filename lists
• arrayjobx: Array data structures for (La)TeX
• arrayjob: Array data structures for (La)TeX
• dowith: Apply a command to a list of items
• fenixpar: One-shot changes to token registers such as \everypar
• multido: A loop facility for Generic TeX
• gtl: Manipulating generalized token lists
• gates: Support for writing modular and customisable code
• multiexpand: Variations on the primitive command \expandafter