The GNU Prolog native compiler
amforth is an extendible interpreter on microcontrollers
The Tool Command Language implementation
bash debugger
REXX interpreter
Jainja is a JVM (Java Virtual Machine) written in Java
Advanced TECO dialect and interactive screen editor based on Scintilla
A minimalistic but complete standard Forth compiler in C
Interpreter and compiler for the Seed7 programming language.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
General Purpose Engine for Graphic Adventures.
A BASIC interpreter and compiler with graphics.
BASIC language interpreter (multiplatform)
Perform dynamic tunings for realtime music.
Runtime and development environment of Oz
A cross-platform interpreter for many point-and-click adventure games