Suggestions for Colonequals

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

Package acmart: Class for typesetting publications of ACM
Package stackrel: Enhancement to the \stackrel command
Package centernot: Centred \not command
Package setouterhbox: Set hbox in outer horizontal mode
Package bytefield: Create illustrations for network protocol specifications
Package csthm: Customized theorem environments for computer science documents
Package csassignments: A wrapper for article with macros and customizations for computer science assignments
Package trfsigns: Typeset transform signs
Package turnstile: Typeset the (logic) turnstile notation
Package gensymb: Generic symbols for both text and math mode
Package semantic: Help for writing programming language semantics
Package chemarr: Arrows for chemists
Package bitfield: Draw bit field data structure diagrams (obsolete)
Package bitpattern: Typeset bit pattern diagrams
Package membranecomputing: Membrane Computing notation
Package register: Typeset programmable elements in digital hardware (registers)
Package resizegather: Automatically resize overly large equations
Package xcomment: Allows selected environments to be included/excluded
Package stmaryrd: St Mary Road symbols for theoretical computer science
Package esint: Extended set of integrals for Computer Modern
Package drawstack: Draw execution stacks
Package termsim: Simulate Win10, Ubuntu, and Mac terminals
Package sim-os-menus: Insert terminal or context menu or viewers like in an OS
Package engord: Converts numbers to English ordinal numbers
Package hyphsubst: Substitute hyphenation patterns
Package hypbmsec: Hypertext bookmarks in sectioning commands
Package fibnum: Generate Fibonacci numbers
Package settobox: Assigning dimensions of a box to a length register
Package rotchiffre: Perform simple rotation cyphers
Package thepdfnumber: Print PDF numbers with minimal digits
Package abraces: Asymmetric over-/underbraces in maths