XGP is an integrated development environment that extends GNU Prolog to work with Cocoa under Macintosh OS X. It provides user interface and graphics facilities largely compatible with MacProlog32 by LPA. Requires Mac OS X version 10.2.1 or greater.
ferite is a modern, lighweight, portable, threadsafe scripting engine with a language that is very easy to pick up and leverage for any task. It\'s been designed for rapid deployment in other programs as well as stand alone use.
Leafpile is a Z-code interpreter, a Java implementation of the Z-machine virtual machine used for running Infocom/Inform interactive fiction story files. Leafpile seeks complete compliance with the Z-machine Standards Document 1.0.