AGT
From IFWiki
AGT is an acronym for Adventure Game Toolkit.
A simplistic system for programming IF games that involves filling in a Pascal database. It was created in 1987 by David Malmberg, who was updating Mark J. Welsh's GAGS.
AGT games could originally be played only on DOS and a limited number of other platforms, one being Amiga. A recent tool named AGiliTy allows for playing on several other platforms.