Suggestions for Newsletr

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

Package newspaper: Typeset newsletters to resemble newspapers
Package papertex: Class for newspapers, etc.
Package flowfram: Create text frames for posters, brochures or magazines
Package modernnewspaper: A modern, Unicode-first newspaper package for LaTeX
Package fancymag: A LuaLaTeX package for academic magazines and scientific
Package letgut: Class for the newsletter La Lettre GUTenberg of the French TeX User Group GUTenberg
Package harvmac: Macros for scientific articles
Package resumemac: Plain TeX macros for resumés
Package letter1: Letter formatting macros
Package mlawriter: Write MLA style documents in Plain TeX
Package histyle: A HighStyle environment for TeX
Package automagic: Automatic counter numbering in Plain TeX
Package lextex: Typesetting legal documents using plain TeX
Package plain-widow: Three output routines that extend \plainoutput
Package plain-grid: Four sets of macros for typesetting on a baseline grid
Package treedef: Macros to typeset trees in Plain TeX
Package hanoi: Tower of Hanoi in TeX
Package mnras-plain: Plain TeX macros for MNRAS
Package plcalendar: Plain macros for making nice calendars
Package timetable: Generate timetables
Package tugboat-plain: Plain TeX macros for TUGboat
Package badge: Print badge labels
Package bridge-pln: Plain TeX macros for writing about bridge
Package chbar: Change bar marks in Plain TeX
Package casslbl: Typeset cassette labels
Package cascover: Make cassette covers
Package literate: A literate programming system, not tied to any language
Package prepr: Preprint macros
Package stables: Simplified Plain TeX tables
Package treetex-plain: Draw trees
Package wrtfile: Write TeX files from a TeX document