XZip is an X interface for text adventures.
XZip is a clean X Windows interface to games written in Infocom's Z-code game format. It handles Z-code versions 1 through 5 and version 8. It is free.
The interface is heavily (well, completely) based on ATK, an X toolkit developed at CMU. Really, I would have preferred to actually do this in ATK... except that then you'd need ATK to run it, and that's 50 megabytes of source code. (Honest.) So I just did an imitation.