Suggestions for Namedef

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

Package lparse: Parse macro arguments with Lua using xparse-like specification
Package advice: Extend commands and environments
Package ltxcmds: Some LaTeX kernel commands for general use
Package pdftexcmds: LuaTeX support for pdfTeX utility functions
Package hologo: A collection of logos with bookmark support
Package iftex: Am I running under pdfTeX, XeTeX or LuaTeX?
Package luakeys: A Lua module for parsing key-value options
Package youngtab: Typeset Young-Tableaux
Package tuple: Expandable operations for tuples of numbers
Package expkv-bundle: An expandable key=val implementation and friends
Package default: Provide default parameters for TeX macros
Package eoldef: Define commands which absorb the whole source line as arguments
Package polexpr: A parser for polynomial expressions
Package witharrows: Aligned math environments with arrows for comments
Package luatexja: Typeset Japanese with Lua(La)TeX
Package schemata: Print topical diagrams
Package chemfig: Draw molecules with easy syntax
Package xfp: Interface to the LaTeX3 floating point unit
Package xparse: A generic document command parser
Package inlinedef: Inline expansions within definitions
Package xtemplate: A high-level interface for declaring document commands
Package letltxmacro: Let assignment for LaTeX macros
Package collargs: Collect arguments of any command
Package localloc: Macros for localizing TeX register allocations
Package tokmap: Iterate over a token list expandably, without dropping spaces or braced groups
Package plainpkg: A minimal method for making generic packages
Package etoolbox-generic: A loader for etoolbox.sty in non-LaTeX formats
Package addtoluatexpath: Add paths to Lua packages and input TeX files
Package calcfrac: Calculates the value of an expression containing fractions
Package fltpoint: Simple floating point arithmetic
Package langcode: Simple language-dependent settings based on language codes