# Interesting Taps & Forks

A [tap](Taps.md) 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 at <https://github.com/Homebrew/homebrew-core>, often called `homebrew/core`, is always built-in.

Your taps are Git repositories located at `$(brew --repository)/Library/Taps`.

## Unsupported interesting taps
*   [homebrew-ffmpeg/ffmpeg](https://github.com/homebrew-ffmpeg/homebrew-ffmpeg): A tap for FFmpeg with additional options, including nonfree additions.

*   [denji/nginx](https://github.com/denji/homebrew-nginx): A tap for NGINX modules, intended for its `nginx-full` formula which includes more module options.

*   [InstantClientTap/instantclient](https://github.com/InstantClientTap/homebrew-instantclient): A tap for Oracle Instant Client. The packages need to be downloaded manually.

*   [osx-cross/avr](https://github.com/osx-cross/homebrew-avr): GNU AVR toolchain (Libc, compilers and other tools for Atmel MCUs, useful for Arduino hackers and AVR programmers).

*   [petere/postgresql](https://github.com/petere/homebrew-postgresql): Allows installing multiple PostgreSQL versions in parallel.

*   [osrf/simulation](https://github.com/osrf/homebrew-simulation): Tools for robotics simulation.

*   [brewsci/bio](https://github.com/brewsci/homebrew-bio): Bioinformatics formulae.

*   [davidchall/hep](https://github.com/davidchall/homebrew-hep): High energy physics formulae.

*   [lifepillar/appleii](https://github.com/lifepillar/homebrew-appleii): Formulae for vintage Apple emulation.

## Unsupported interesting forks

*   [mistydemeo/tigerbrew](https://github.com/mistydemeo/tigerbrew): Experimental Tiger PowerPC version.
