Programming
Blorb: A Z-Machine Resource Collection Format Stan, Glk: An Interface Standard for Interactive Fiction, The Blorb Resources Format, The Z-Machine Standards Document, Z-Machine Specification
Glk
An I/O library used to make interpreters more portable. You need this if your interpreter says it requires Glk.
Jzip Development
Open Source Z-code interpreter for UNIX, DOS, OS/2, Atari ST and other machines.
Malyon
A Z-Machine interpreter for GNU Emacs. May be useful combined with the Emacs Inform major mode.
Nitfol
An interpreter intended for debugging. Includes auto-map feature, and debugging (cheat) verbs. Requires Glk for I/O.
Revenge of the Z-Machine
A z-machine interpreter in Java.
Yahoo Groups: ZBurin-IF
A group for discussion of the upcoming ZBurin interactive fiction game playing system for the Cybiko handheld computer.
Yazi
Z-Machine interpereter for the Apple Newton PDA. Shareware. ($25)
ZBurin for Cybiko
Preliminary screenshots of a z-code interpreter for the Cybiko.
Zoom
GNU Z-machine for version 3, 5, 7 and 8 story files. Designed to run under X-windows on a vaguely POSIX-ish Unix.