The Tool Command Language implementation
Expert System Tool
An hack of Jscheme with a lot of enhancements and additional features.
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
A BASIC interpreter and compiler with graphics.
An object-oriented script language to embed in any application
A cross-platform interpreter for many point-and-click adventure games
Basic interpreter in ANSI C