The Programming Languages Zoo, or PL Zoo for short, implements a variety of programming languages. The implementations are purposely kept simple and to the point so that they are a good starting point for those who would like to implement their own programming language, or just learn how it is done.
The PL Zoo is open source, see the file LICENSE.txt for licensing information.
To compile the PL Zoo you will need:
A good way to get started with OCaml is to use the Ocaml Package Manager, through which menhir is available.
At the moment the PL Zoo is undergoing a major reorganization. I am porting it to Github and consolidating the various programming languages into a more unified library. Please stay tuned.