Homebrew: list the packages installed from taps?

Question

Over time, I\'ve installed a number of packages with Homebrew, mostly from the default repo of formulae (homebrew-core), but some from other locations via brew tap

Answer 1

This expression would return a list of installed 3rd party packages only:

brew list --full-name -1 | grep /

…for the respective list of taps in use, try:

brew list --full-name -1 | grep / | cut -d"/" -f1 -f2 | sort | uniq