Suggestions for marginfix

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

Package marginnote: Notes in the margin, even where \marginpar fails
Package mparhack: Work around a LaTeX bug in marginpars
Package marginfit: Improved margin notes
Package sidenotes: Typeset notes containing rich content, in the margin
Package snotez: Typeset notes, in the margin
Package marginal: Extensions to \marginpar handling
Package marginalia: Marginal content anywhere with automatic adjustment for LuaLaTeX
Package flexipage: Flexible page geometry with marginalia
Package mnotes: Margin annotation for collaborative writing
Package sidenotesplus: Place referenced notes, alerts, figures and tables into the document margin
Package margbib: Display bibitem tags in the margins
Package zebra: Writing revision toolkits
Package smartnotes: Visually anchored margin notes with connector lines and dynamic placement
Package pdfreview: Annotate PDF files with margin notes
Package page-canons: Classical page-layout canons with margin-note support
Package marginote: Make numbered notes in the margin
Package bxorigcapt: To retain the original caption names when using Babel
Package apptools: Tools for customising appendices
Package askinclude: Interactive use of \includeonly
Package anysize: A simple package to set up document margins
Package addlines: A user-friendly wrapper around \enlargethispage
Package anonchap: Make chapters be typeset like sections
Package bookmark: A new bookmark (outline) organization for hyperref
Package bigints: Writing big integrals
Package bigstrut: Struts for opening up tabular spacing
Package comma: Formats a number by inserting commas
Package chbibref: Change the Bibliography/References title
Package commath: Mathematics typesetting support
Package dialogue: Quote short scripted dialogue in LaTeX
Package diffcoeff: Write differential coefficients easily and consistently
Package docmute: Input files ignoring LaTeX preamble, etc.