Suggestions for ddphonism
The following packages have something in common with the package ddphonism. The packages are ordered in decreasing similarity.
- recorder-fingering: Package to display recorder fingering diagrams
 - fretplot: Create scale and chord diagrams for guitar-like instruments
 - bondgraphs: Draws bond graphs in LaTeX, using PGF/TikZ
 - undar-digitacion: Musical fingering diagrams of Pinkullo Huanuqueño, Flute (Recorder), Quena and Saxophone
 - venndiagram: Creating Venn diagrams with TikZ
 - chronos: TikZ-based package for drawing customisable timelines with support for colour schemes, styles and memoization
 - reotex: Draw Reo Channels and Circuits
 - smartdiagram: Generate diagrams from lists
 - grafcet: Draw Grafcet/SFC with TikZ
 - messagepassing: Draw diagrams to represent communication protocols
 - adigraph: Augmenting directed graphs
 - pgfmolbio: Draw graphs typically found in molecular biology texts
 - fast-diagram: Easy generation of FAST diagrams
 - simplenodes: Simple nodes in four colors written in TikZ for LaTeX
 - syntaxdi: Create “railroad” syntax diagrams
 - sankey: Draw Sankey diagrams with TikZ
 - prisma-flow-diagram: An abstraction for creating PRISMA 2009 flow diagrams with TikZ
 - duotenzor: Drawing package for circuit and duotensor diagrams
 - chordbox: Draw chord diagrams
 - chordbars: Print chord grids for pop/jazz tunes
 - tikz-trackschematic: A TikZ library for creating track diagrams in railways
 - tikz-timing: Easy generation of timing diagrams as TikZ pictures
 - tikz-nef: Create diagrams for neural networks constructed with the methods of the Neural Engineering Framework (NEF)
 - tikz-network: Draw networks with TikZ
 - tikz-opm: Typeset OPM diagrams
 - tikz-sfc: Symbols collection for typesetting Sequential Function Chart (SFC) diagrams (PLC programs)
 - commutative-diagrams: CoDi: Commutative Diagrams for TeX
 - tikz-ladder: Draw ladder diagrams using TikZ
 - tikz-relay: TikZ library for typesetting electrical diagrams
 - ladder: Draw simple ladder diagrams using TikZ
 - flowchart: Shapes for drawing flowcharts, using TikZ