PCL-Compiler is a compiler for PCL: a simple Pascal-derived programming language, used for teaching compiler technology in the National Technical University of Athens.
Lexy is a Scrabble-playing bot written in OCaml. Because it can be compiled to a machine executable, it is wicked fast.
*** Moved to http://github.com/esumii/min-caml ***
*** Moved to http://github.com/esumii/min-caml *** MinCaml: An educational compiler from a tiny ML subset to the SPARC or PowerPC assembly language; Only 2000 lines of Objective Caml, but almost as efficient as---or even more efficient than---OCaml and GCC!