The Tool Command Language implementation
Agena is an interpreted procedural programming language.
The GNU Prolog native compiler
REXX interpreter
A minimalistic but complete standard Forth compiler in C
Jainja is a JVM (Java Virtual Machine) written in Java
Advanced TECO dialect and interactive screen editor based on Scintilla
The interpreter for BrainF
A COW interpreter written in C
A Pikalang interpreter written in C
A Script Language for Web, Linux and Windows
amforth is an extendible interpreter on microcontrollers
General Purpose Engine for Graphic Adventures.
Interpreter and compiler for the Seed7 programming language.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
A BASIC interpreter and compiler with graphics.
Programming language with expressive power and a simple implementation
BASIC language interpreter (multiplatform)