Suggestions for mhack

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

Package marginote: Make numbered notes in the margin
Package automagic: Automatic counter numbering in Plain TeX
Package modernruler: Flexible ruler and annotation commands with key-value support and vertical writing compatibility
Package notestex: An all-in-one LaTeX notes package for students
Package letter-plain: Letter macros for Plain TeX
Package figplace: Floating figures in Plain TeX
Package lettermac: Simple macros for writing letters (Plain TeX)
Package label-pln: Print address labels in three columns
Package plain-cm: Variable sized fonts in Plain TeX
Package twoside: Two-side typesetting in Plain TeX
Package toc-zar: Plain TeX table of contents macros
Package twocolumns: Knuth’s two-column output macros
Package list: Verbatim listing of text files
Package pi: Calculate pi
Package settosize: Scale text to given width
Package labelmac3: Print Avery 5160 labels for laser printers
Package autotoc: Table of contents in Plain TeX
Package border: Draw a black border around a Plain TeX page
Package boxit: Draw a box around a text
Package bellmac: Outline scheme for form letter production
Package bfsymb: Generate bold symbols in Plain TeX mathematics
Package bibplain: Simple macros for using BibTeX with Plain TeX
Package cassette: Typeset cassette box inserts
Package capparmode: Dropped capitals for Plain TeX
Package cropmrks: Add crop marks to a Plain TeX document
Package doublecol: Double-column page macros for Plain TeX
Package dmhgener: Equation, figure (etc.) numbering and referencing
Package defstring: Define macros as verbatim macros
Package fnpara-pln: Footnotes in paragraphs
Package fnote: Auto-numbered footnotes in Plain TeX
Package fixpdfmag: Fix magnification in pdfTeX