Suggestions for Colophon

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

Package passopt: Passing options to packages or classes
Package pointruler: 12″ Ruler containing Points and Inches
Package typoaid: Macros for font diagnostics
Package stricttex: Strictly balanced brackets and numbers in command names
Package spalign: Typeset matrices and arrays with spaces and semicolons as delimiters
Package currfile: Provide file name and path of input files
Package changes: Manual change markup
Package filemod: Provide file modification times, and compare them
Package gridset: Grid, a.k.a. in-register, setting
Package tutodoc: Typeset tutorial-like documentations
Package fink: The LaTeX2ε File Name Keeper
Package upgreek: Upright Greek letters
Package iso10303: Typesetting the STEP standards
Package returntogrid: Semi-automatic grid typesetting
Package grid: Baseline-grid typesetting in LaTeX
Package iso: Generic ISO standards typesetting macros
Package babel-esperanto: Babel support for Esperanto
Package mversion: Keeping track of document versions
Package slashed: Put a slash through characters
Package dotlessj: Generates a dot-less j
Package chemarr: Arrows for chemists
Package centernot: Centred \not command
Package amsrefs: A LaTeX-based replacement for BibTeX
Package eqnlines: Single- and multiline equations
Package acronym: Expand acronyms at least once
Package appendix: Extra control of appendices
Package algorithms: A suite of tools for typesetting algorithms in pseudo-code
Package bxcoloremoji: Use color emojis more conveniently
Package boxedminipage: Framed minipages of a specified total width (text and frame combined)
Package chemarrow: Arrows for use in chemistry
Package changepage: Margin adjustment and detection of odd/even pages