Suggestions for braket

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

physics: Macros supporting the Mathematics of Physics
linop: Typeset linear operators as they appear in quantum theory or linear algebra
nchairx: Maths macros from chair X of Würzburg University
phfqit: Macros for typesetting Quantum Information Theory
pm-isomath: Poor man ISO math for pdfLaTeX users
physics2: Macros for typesetting maths faster and more simply
cora-macs: Macros for continuous sets and neural networks in the context of cyber-physical systems
odesandpdes: Optimizing workflow involving odes and pdes
subsupscripts: A range of sub- and superscript commands
schulmathematik: Commands and document classes for German-speaking teachers of mathematics and physics
hep: A "convenience wrapper" for High Energy Physics packages
hepnames: Pre-defined high energy particle names
simplewick: Simple Wick contractions
hepunits: A set of units useful in high energy physics applications
hepparticles: Macros for typesetting high energy physics particle names
mecaso: Formulas frequently used in rigid body mechanics
phfextendedabstract: Typeset extended abstracts for conferences, such as often encountered in quantum information theory
chs-physics-report: Physics lab reports for Carmel High School
uol-physics-report: A LaTeX document class for writing lab reports
hepthesis: A class for academic reports, especially PhD theses
isotope: A package for typesetting isotopes
nrc: Class for the NRC technical journals
nuc: Notation for nuclear isotopes
ptptex: Macros for 'Progress of Theoretical Physics'
physymb: Assorted macros for Physicists
pawpict: Using graphics from PAW
susy: Macros for SuperSymmetry-related work
revquantum: Hacks to make writing quantum papers for revtex4-1 less painful
nucleardata: Provides data about atomic nuclides for documents
slashed: Put a slash through characters
bohr: Simple atom representation according to the Bohr model