Suggestions for changebar

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

Package prelim2e: Allows the marking of preliminary versions of a document
Package comment: Selectively include/exclude portions of text
Package draftwatermark: Put a grey textual watermark on document pages
Package optional: Facilitate optional printing of parts of a document
Package vertbars: Mark vertical rules in margin of text
Package changes: Manual change markup
Package fixme: Collaborative annotation tool for LaTeX
Package upgreek: Upright Greek letters
Package nameauth: Name authority mechanism for consistency in body text and index
Package todonotes: Marking things to do in a LaTeX document
Package xechangebar: An extension of package changebar that can be used with XeLaTeX
Package babel-esperanto: Babel support for Esperanto
Package ed: Editorial Notes for LaTeX documents
Package draftmark: Put draft marks on selected pages
Package errata: Error markup for LaTeX documents
Package minorrevision: Quote and refer to a manuscript for minor revisions
Package vrsion: Add version number to a DVI file
Package draftcopy: Identify draft copies
Package extract: Write selected parts of a document to a separate file
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