Suggestions for Envmath

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

Package sobolev: Commands for dealing with Sobolev spaces (and relatives)
Package mathcmd: Mathematics support commands
Package bosisio: A collection of packages by Francesco Bosisio
Package accenti: Extra accented character macros, designed for Italian
Package evenpage: Ensure that the total number of pages is even
Package graphfig: Simpler graphic, subfigure and float
Package quotes: Smart double quotes in LaTeX input
Package dblfont: Blackboard bold font package
Package eqnalign: Make eqnarray behave like align
Package phfthm: Goodies for theorems and proofs
Package inkpaper: A mathematical paper template
Package mhs: Historical mathematics
Package atendofenv: Add a custom symbol at the end of an environment
Package jmsdelim: A package for compositional delimiter sizing
Package resmes: Measure restriction symbol in LaTeX
Package skmath: Extensions to the maths command repertoir
Package boldtensors: Bold latin and greek characters through simple prefix characters
Package bropd: Simplified brackets and differentials in LaTeX
Package conteq: Typeset multiline continued equalities
Package correctmathalign: Correct spacing of the alignment in expressions
Package cascade: Constructions with braces to present mathematical demonstrations
Package complexpolylongdiv: Typesetting (complex) polynomial long division
Package delim: Simplify typesetting mathematical delimiters
Package delimseasy: Delimiter commands that are easy to use and resize
Package fixdif: Macros for typesetting differential operators
Package flagderiv: Flag style derivation package
Package freemath: LaTeX maths without backslashes
Package lplfitch: Fitch-style natural deduction proofs
Package mhequ: Multicolumn equations, tags, labels, sub-numbering
Package mdwmath: Some maths extensions
Package mathsemantics: Semantic math commands in LaTeX