tLISP is a small implementation of the LISP programming language written in Object Pascal. Includes tle a command line tool for working with the LISP environment, and dynamic library for calling LISP functions from other applications. tLISP 2 or dLISP is
This is an interpreter for the piet scripting language (I use the term "scripting" loosely) that extends the language to allow even more complex and imaginative programs.