Suggestions for Spath3

The following packages have something in common with the package Spath3. The packages are ordered in decreasing similarity.

Package hobby: An implementation of Hobby’s algorithm for PGF/TikZ
Package tikz-nfold: Triple, quadruple, and n-fold paths with TikZ
Package tikz-dimline: Technical dimension lines using PGF/TikZ
Package bez123: Support for Bezier curves
Package curves: Draw curves in the LaTeX picture environment
Package ebezier: Device independent picture environment enhancement
Package tikzducks: A little fun package for using rubber ducks in TikZ
Package tikzlings: A collection of cute little animals and similar creatures
Package tikzmarmots: Drawing little marmots in TikZ
Package tikzbricks: Drawing bricks with TikZ
Package broydensolve: Solve a system of equations with Broyden’s good method
Package liftarm: Geometric constructions with liftarms using TikZ and LaTeX3
Package polyomino: Polyominoes using TikZ and LaTeX3
Package tikzpingus: Penguins with TikZ
Package wheelchart: Diagrams with circular or other shapes using TikZ and LaTeX3
Package cistercian: Display cistercian numerals
Package prooftrees: Forest-based proof trees (symbolic logic)
Package jigsaw: Draw jigsaw pieces with TikZ
Package tilings: A TikZ library for drawing tiles and tilings
Package tikzpeople: Draw people-shaped nodes in TikZ
Package tikzfill: TikZ libraries for filling with images and patterns
Package tikz-cd: Create commutative diagrams with TikZ
Package tikz-3dplot: Coordinate transformation styles for 3d plotting in TikZ
Package pgf-blur: PGF/TikZ package for blurred shadows
Package rpgicons: Icons for tabletop role-playing games
Package bearwear: Shirts to dress TikZbears
Package curve2e: Extensions for package pict2e
Package quiver: Draw commutative diagrams exported from https://q.uiver.app
Package pgfplots: Create normal/logarithmic plots in two and three dimensions
Package tikz-dependency: A library for drawing dependency graphs
Package tikz-feynman: Feynman diagrams with TikZ