Beef is a flexible interpreter for the Brainfuck programming language. Its main goals are to be confortable for the user and to run most Brainfuck programs unchanged; speed is generally quite good.

Beef can run virtually any Brainfuck program, even ones that make assumptions about the behavior of the interpreter, thanks to its configurability.

Good error checking is performed, so incorrect programs will simply not be allowed to run, instead of manifesting undefined behavior.

Beef is capable of loading programs straight off the Web or other kinds of non-local storage, as long as a suitable GVFS implementation is available on the system; the same applies to output, where it makes sense. GNU Readline is used for interactive user input.

The project's website contains pointers to the canonical Git repository, which you should clone if you're interested in hacking on Beef, and the official release archives, which you should use otherwise.

Several distributions provide packages for Beef: if your distribution is among those, you should use your package manager to install Beef instead of building from source.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.