Suggestions for Tokcycle

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

Package tokmap: Iterate over a token list expandably, without dropping spaces or braced groups
Package lparse: Parse macro arguments with Lua using xparse-like specification
Package collargs: Collect arguments of any command
Package localloc: Macros for localizing TeX register allocations
Package plainpkg: A minimal method for making generic packages
Package etoolbox-generic: A loader for etoolbox.sty in non-LaTeX formats
Package advice: Extend commands and environments
Package forloop: Iteration in LaTeX
Package expkv-cs: Define expandable key=val macros using expkv
Package ltxcmds: Some LaTeX kernel commands for general use
Package pdftexcmds: LuaTeX support for pdfTeX utility functions
Package catcodes: Generic handling of TeX category codes
Package balancedquotes: Code balanced quotes according to document language
Package compare: Macro to compare two strings
Package patch: Modify already-loaded packages
Package tokstools: Tools for manipulating tokens
Package synctex-parser: SyncTeX output file parser
Package expkv-bundle: An expandable key=val implementation and friends
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
Package laps: Zero-width boxes for annotations, etc.
Package lua-visual-debug: Visual debugging with LuaLaTeX
Package namedef: TeX definitions with named parameters
Package visualtoks: Typeset TeXbook-style visualisations of token lists
Package mathcommand: \newcommand-like commands for defining math macros
Package ruler: A typographic ruler for TeX
Package olsak-misc: Collection of plain TeX macros written by Petr Olšák
Package kanaparser: Kana parser for LuaTeX
Package lua-tinyyaml: A tiny YAML (subset) parser in pure Lua