Suggestions for braket

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

Package physics: Macros supporting the Mathematics of Physics
Package physics-patch: Improved version of the physics package
Package slashed: Put a slash through characters
Package isotope: A package for typesetting isotopes
Package simpler-wick: Simpler Wick contractions
Package simplewick: Simple Wick contractions
Package cora-macs: Macros for continuous sets and neural networks in the context of cyber-physical systems
Package physics3: Modularized package for easy setting of physical formulas
Package linop: Typeset linear operators as they appear in quantum theory or linear algebra
Package nchairx: Maths macros from chair X of Würzburg University
Package physics2: Macros for typesetting maths faster and more simply
Package pm-isomath: Poor man ISO math for pdfLaTeX users
Package phfqit: Macros for typesetting Quantum Information Theory
Package schulmathematik: Commands and document classes for German-speaking teachers of mathematics and physics
Package odesandpdes: Optimizing workflow involving odes and pdes
Package shuffle: A symbol for the shuffle product
Package subsupscripts: A range of sub- and superscript commands
Package bigints: Writing big integrals
Package commath: Mathematics typesetting support
Package diffcoeff: Write differential coefficients easily and consistently
Package derivative: Nice and easy derivatives
Package esdiff: Simplify typesetting of derivatives
Package fixmath: Make maths comply with ISO 31-0:1992 to ISO 31-13:1992
Package mleftright: Variants of delimiters that act as maths open/close
Package icomma: Intelligent commas for decimal numbers
Package mlist: Logical markup for lists
Package upgreek: Upright Greek letters
Package optidef: Environments for writing optimization problems
Package mhsetup: The mathtools setup function
Package feynmf: Macros and fonts for creating Feynman (and other) diagrams
Package autobreak: Simple line breaking of long formulae