Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Scripting engine for Pascal compilers.
NARS2000: An Experimental APL Interpreter
A free, cross-platform emulator for GW-BASIC, PCjr & Tandy BASIC
A Java implementation of XProc: An XML Pipeline Language
An object-oriented script language to embed in any application
C# lexer and parser
A Compiler Development Toolkit
Interpreter and debugger for various esoteric programming languages
An Apache module for developing web applications using Lua
Befunge-93 Interpreter