REXX interpreter
The Tool Command Language implementation
Expert System Tool
The GNU Prolog native compiler
Agena is an interpreted procedural programming language.
Next Scripting Framework (NSF)
Dynamically loaded extension libraries for GNU AWK
bash debugger
Interpreter and compiler for the Seed7 programming language.
A minimalistic but complete standard Forth compiler in C
General Purpose Engine for Graphic Adventures.
FTH Forth Scripting
An universal TCP client.
Advanced TECO dialect and interactive screen editor based on Scintilla