Developer website: Thinkyhead Software
MacFrotz is a front-end for the dFrotz interactive fiction engine that runs specially-compiled Z-Code fiction files. With MacFrotz you can play the classic Scott Adams Adventures, all the classic Infocom adventures like Hitchhiker's Guide to the Galaxy, Planetfall, and Deadline, and a vast library of interactive fiction you've never heard of before. All you need is some Z-Code files.
Mac OS X 10.1 or later