A tap is Homebrew-speak for a Git repository containing additional formulae.
Homebrew has the capability to add (and remove) multiple taps to your local installation with the
brew tap and
brew untap commands; run
man brew in your terminal for usage information. The main repository at https://github.com/Homebrew/homebrew-core, often called
homebrew/core, is always built-in.
Your taps are Git repositories located at
homebrew-ffmpeg/ffmpeg: A tap for FFmpeg with additional options, including nonfree additions.
denji/nginx: A tap for NGINX modules, intended for its
nginx-full formula which includes more module options.
InstantClientTap/instantclient: A tap for Oracle Instant Client.
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.
osrf/simulation: Tools for robotics simulation.
brewsci/bio: Bioinformatics formulae.
davidchall/hep: High energy physics formulae.
lifepillar/appleii: Formulae for vintage Apple emulation.
gromgit/fuse: macOS FUSE formulae that are no longer available in
cloudflare/cloudflare: Formulae for the applications by Cloudflare, including curl with HTTP/3 support.