Suggestions for Letterswitharrows

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

Package venndiagram: Creating Venn diagrams with TikZ
Package tikz-ext: A collection of libraries for PGF/TikZ
Package orcidlink: Insert hyperlinked ORCiD logo
Package worldflags: Drawing flags with TikZ
Package atableau: A LaTeX package for symmetric group combinatorics
Package nicematrix: Improve the typesetting of matrices and tabulars with PGF
Package upgreek: Upright Greek letters
Package tilings: A TikZ library for drawing tiles and tilings
Package penrose: A TikZ library for producing Penrose tilings
Package tkz-berge: Macros for drawing graphs of graph theory
Package overarrows: Custom extensible arrows over math expressions
Package tikz-timing: Easy generation of timing diagrams as TikZ pictures
Package bchart: Draw simple bar charts in LaTeX
Package bearwear: Shirts to dress TikZbears
Package rpgicons: Icons for tabletop role-playing games
Package tikz-karnaugh: Typeset Karnaugh maps using TikZ
Package luamesh: Computes and draws 2D Delaunay triangulation
Package luadraw: Lua-based mathematical graphs for LuaLaTeX
Package causets: Draw causal set (Hasse) diagrams
Package eqnlines: Single- and multiline equations
Package delimset: Typeset and declare sets of delimiters with convenient size control
Package extpfeil: Extensible arrows in mathematics
Package extarrows: Extra Arrows beyond those provided in amsmath
Package iwonamath: LaTeX support for scaled Iwona math fonts
Package mathtools: Mathematical tools to use with amsmath
Package mattens: Matrices/tensor typesetting
Package mathpartir: Typesetting sequences of math formulas, e.g. type inference rules
Package mathbbol: Use the bbold fonts in mathematics
Package sansmath: Maths in a sans font
Package steinmetz: Print Steinmetz notation
Package trfsigns: Typeset transform signs