A tap is homebrew-speak for a Git repository containing extra formulae.
Homebrew has the capability to add (and remove) multiple taps to your local installation with the
brew tap and
brew untap commands. Type
man brew in your Terminal. The main repository https://github.com/Homebrew/homebrew-core, often called
homebrew/core, is always built-in.
homebrew/apache: A tap for Apache modules, extending macOS’s built-in Apache. These brews may require unconventional additional setup, as explained in the caveats.
homebrew/nginx: Feature rich Nginx tap for modules.
homebrew/php: Repository for php-related formulae.
homebrew/science: A collection of scientific libraries and tools.
brew search looks in these taps as well as in homebrew/core so don’t worry about missing stuff.
You can be added as a maintainer for one of the Homebrew organization taps and aid the project! If you are interested write to our list: email@example.com. We want your help!
InstantClientTap/instantclient: A tap for Oracle Instant Client. The packages need to be downloaded manually.
besport/ocaml: A tap for Ocaml libraries, though with caveats, it requires you install its customized ocaml formula. Perhaps a template for more work.
osx-cross/avr: GNU AVR toolchain (Libc, compilers and other tools for Atmel MCUs, useful for Arduino hackers and AVR programmers).
petere/postgresql: Allows installing multiple PostgreSQL versions in parallel.
titanous/gnuradio: GNU Radio and friends running on macOS.
dunn/emacs: A tap for Emacs packages.
Your taps are Git repositories located at