miniasm is a short bytecode based assebler, interpreter and compiler
a code generator for any programming language
A Compiler Development Toolkit
A Critic for APIs and Libraries
A small, self-hosting 16bit Forth system
An IDE for the programming language whitespace.
Poe is a small, fast, flexible scripting language.
CLIPS with lock support. CLIPS for safely handling simultaneous access
Interpreter and debugger for various esoteric programming languages
Functional programming in natural language
dependently typed functional programming language
Lisp interpreter for the PSP + UNIX-clones.
AMOS BASIC reimplementation in Java