Suggestions for semantic

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

Package bitfield: Draw bit field data structure diagrams (obsolete)
Package bitpattern: Typeset bit pattern diagrams
Package membranecomputing: Membrane Computing notation
Package register: Typeset programmable elements in digital hardware (registers)
Package csthm: Customized theorem environments for computer science documents
Package csassignments: A wrapper for article with macros and customizations for computer science assignments
Package drawstack: Draw execution stacks
Package termsim: Simulate Win10, Ubuntu, and Mac terminals
Package sim-os-menus: Insert terminal or context menu or viewers like in an OS
Package bytefield: Create illustrations for network protocol specifications
Package acmart: Class for typesetting publications of ACM
Package semantic-markup: Meaningful semantic markup in the spirit of the Text Encoding Initiative
Package colonequals: Colon equals symbols
Package miller: Typeset miller indices
Package quantumcubemodel: Representation of quantum states in the quantum cube model
Package codesection: Provides an environment that may be conditionally included
Package conditext: Define and manage conditional content
Package eqnnumwarn: Modifies the amsmath equation environments to warn for a displaced equation number
Package phfcc: Convenient inline commenting in collaborative documents
Package warning: Global warnings at the end of the logfile
Package renditions: Multiple versions from the same content
Package hideanswer: Generate documents with and without answers by toggling a switch
Package lsc: Typesetting Live Sequence Charts
Package draftfigure: Replace figures with a white box and additional features
Package comment: Selectively include/exclude portions of text
Package graphicscache: Cache includegraphics calls
Package ifallfalse: Compare a string against a set of other strings
Package multiaudience: Several versions of output from the same source
Package optional: Facilitate optional printing of parts of a document
Package switch: A constant time/expandable switch/case
Package to-be-determined: Highlight text passages that need further work