The Tool Command Language implementation
REXX interpreter
The GNU Prolog native compiler
Interpreter and compiler for the Seed7 programming language.
eXist-db is a feature rich Open Source native XML database
Implementation of Tcl for the CLR.
Jainja is a JVM (Java Virtual Machine) written in Java
General Purpose Engine for Graphic Adventures.
Pequeño IDE para el lenguaje JMEScript.
A BASIC interpreter and compiler with graphics.
IDLE Extensions
R7RS Scheme scripting engine
JavaScript/XML engine for Apache