Suggestions for catoptions

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

• skeycommand: Create commands using parameters and keyval in parallel
• l3keys2e: LaTeX2ε option processing using LaTeX3 keys
• expkv-cs: Define expandable key=val macros using expkv
• expkv-bundle: An expandable key=val implementation and friends
• pgfopts: LaTeX package options with pgfkeys
• clefval: Key/value support with a hash
• keyval2e: A lightweight and robust key-value parser
• keyreader: A robust interface to xkeyval
• ltxkeys: A robust key parser for LaTeX
• options: Provides convenient key-value options for LaTeX package writers
• pgfkeyx: Extended and more robust version of pgfkeys
• pgfkeysearch: Find keys in a given path ‘recursively’
• pst-xkey: Key-value syntax for PSTricks packages
• skeyval: Key-value parsing combining features of xkeyval and pgfkeys
• xkeymask: An extension of xkeyval with a mask
• kvdefinekeys: Define keys for use in the kvsetkeys package
• kvoptions: Key value format for package options
• keycommand: Simple creation of commands with key-value arguments
• kvsetkeys: Key value parser with default handler support
• xkeyval: Extension of the keyval package
• cdcmd: Expandable conditional commands for LaTeX
• enverb: Read an environment verbatim
• forloop: Iteration in LaTeX
• lambdax: Use Lambda expression within LaTeX
• stack: Tools to define and use stacks
• mwrite: Write information to files
• williams: Miscellaneous macros by Peter Williams
• functional: An intuitive functional programming interface for LaTeX2
• lt3rawobjects: Objects and proxies in LaTeX3
• l3packages: High-level LaTeX3 concepts
• multienv: Multiple environments using a “key=value” syntax