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A tiny Scheme interpreter for embedding in programs.
TinyScheme is a Scheme interpreter that can execute Scheme code but is also suitable for embedding in programs. The goal is to keep the interpreter small while providing as much compatability with Scheme standards as possible.
Conca is similar to Joy and Cat. It is young but can already do quite a bit: it includes most of the basic functions and can read definitions from a file. Definitions are different:
Joy : square == dup *
Conca : [ dup * ] "square" define
Pilo Visual Tools for Scheme (Pvts) is a basicinterpreter with visual tools for Scheme (LISP). Written in Java, PVTS has an interpreter and three visualization modules: a global environment viewer, a function call viewer, and a data structure viewer.