Suggestions for tagging

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

Package comment: Selectively include/exclude portions of text
Package multiaudience: Several versions of output from the same source
Package optional: Facilitate optional printing of parts of a document
Package version: Conditionally include text
Package xifthen: Extended conditional commands
Package xcomment: Allows selected environments to be included/excluded
Package versions: Optionally omit pieces of text
Package ifthen: Conditional commands in LaTeX documents
Package memoize-ext: Extended support for memoization with Memoize
Package codesection: Provides an environment that may be conditionally included
Package conditext: Define and manage conditional content
Package phfcc: Convenient inline commenting in collaborative documents
Package renditions: Multiple versions from the same content
Package hideanswer: Generate documents with and without answers by toggling a switch
Package graphicscache: Cache includegraphics calls
Package ifallfalse: Compare a string against a set of other strings
Package switch: A constant time/expandable switch/case
Package to-be-determined: Highlight text passages that need further work
Package ifthenx: Extra tests for \ifthenelse
Package makegobbler: Keep or drop some part of LaTeX source code
Package latex-tagging-status: The LaTeX Tagging Status data
Package luacensor: Securely redact sensitive information using Lua
Package bytefield: Create illustrations for network protocol specifications
Package acmart: Class for typesetting publications of ACM
Package comment-pln: Comment macros for use in Plain TeX
Package colonequals: Colon equals symbols
Package comment_io: A Python script to comment and uncomment lines
Package srcredact: A tool for redacting sources
Package bitfield: Draw bit field data structure diagrams (obsolete)
Package bitpattern: Typeset bit pattern diagrams
Package membranecomputing: Membrane Computing notation