List of Z-machine interpreters

From IFWiki

The original content of this page is based on a complicated template system which makes it hard to edit. We now have a software database, and eventually would like all the information here to be transferred to the database. To edit a database page, go to the relevant wiki page (e.g. Frotz) and select the "Actions - Edit with form" menu item or the "Edit this infobox" link).

General

NameVersionLicenseProgramming language
Aimfiz 0.5 GPL3 C
Bocfel 0.6.2 GPL3 C
CellarDoor ? ? ?
Filfre 1.1.1 ? C++
Fizmo 0.8.5 ? C
Flaxo ? ? ?
Foblub 0.2.1 ? ?
Frotz 2.44 ? C
Fweep (interpreter) 0.8.3 GPL3 ?
Infgmb ? ? ?
Infuse 0.97 GPL3 ANSI C
Jzip 2.1 ? ?
Malyon 1.0.3 ? ?
MaxZip ? ? ?
Nitfol ? ? ?
Rezrov ? ? ?
Viola 0.8 GPL2 ?
XZip 1.8.2 ? ?
Zax ? MIT ?
Zeal 1.1 ? ?
Zip ? ? ?
ZLR ? GPL2 ?
ZMPP ? ? ?
Zoom ? GPL ?
Zterp 0.3 ? ?
ZVM (ifvms.js) ? BSD2 ?
ZXZVM ? ? ?


Here is the equivalent information from the new database:

Name Status Version Date License
(U)nix IF Development Server Unavailable 2024-09-06
Aimfiz Unavailable GPL3+
Bocfel Stable 2.5 2026-02-07 MIT
Borogove Stable MIT
CellarDoor Unmaintained
CliFrotz Unmaintained 1.6 2005-03-24
CPCZVM 2019
Cugel Unavailable
Dialog Beta 1c/02, library 1.2.3 2026-06-16 BSD-2-Clause
Dialog-Tool Beta 2.0-beta-18 2026-06-03 Apache-2.0
Discourse Frotz Stable
ElseIFPlayer Stable 0.2.0 2023-06-29 MIT
Emglken Stable 0.7.2 2026-05-24 MIT, some terps GPL-2.0
Encrusted Stable 1.1.0 2019-02-25 MIT
Fabularium Unmaintained 1.4.1 2018-11-18
Fabularium (F-Droid) Stable 1.5.1 2025-01-11
Filfre Unmaintained 1.1.1 2013-01-24
Fizmo 0.8.5 2017-09-10 BSD
Flashonate Unavailable
Flaxo Unavailable
Frobnitz Unmaintained 1.0 2000
Frolg Unmaintained 1.4 2013-08-27 GPL3
Frotz Stable 2.55 2025-02-01 GPL2+
Frotz for iOS Stable 1.8.8 2023-09-24 GNU GPL-2.0
Fweep (interpreter) Unmaintained 0.8.4 2013 GNU GPL v3 or later version
Gargoyle Stable 2026.1.1 2026-02-08 GPL-2.0
Gelek Vanilla Stable 3.1.0 2024-09-18 GNU GPL v2
Glulx-strings Stable v4.4.0 2019-09-14 MIT
GLUZMA Public domain
Gnusto Unmaintained
Hunky Punk Stable 1.8 2021-04-05
Ifvms.js Stable 1.1.6 2021-02-11
Incant Unmaintained
Infocom Frotz Stable 2024-09-01 GPL2
Inform 1 Unmaintained
Inform 2 Unmaintained
Inform 3 1993-11-19
Inform 4 Unmaintained 1994-01-24
Inform 5 Unmaintained 1994-06-13
Inform 6 Stable 6.44 2025-09-11 Inform License or Artistic License 2.0
Inform 7 Stable 10.1.2 2022-08-31 Artistic 2.0
InfoZip Unmaintained 1.8m 1996 Commercial
Infuse Beta 0.98.5 2022-11-23 GPL V3
Interl Unmaintained
JSZM Public domain
Jzip Unmaintained 2.1 2000-10-10
Krebf Stable 1.0 2026-04-23 MIT
Leaflet Unavailable
Lectrote Stable 1.5.6 2025-10-04 Mostly MIT, some interpreters BSD, GPL-2.0
M3ZVM Stable 8 2025-02-09 GPL version 2
M4ZVM Stable Release 18 2025-02-09 GPL 2.0
MaxZip Unmaintained 178
MCA Stable 2.22 2005-07-14
MInform Unmaintained 1.1
Muttonate Unmaintained 0.0-(20060106-8)
Nitfol Unmaintained 0.6-pre4 2008-12-07 GPL-3
ORLibrary Beta 2.0beta RC2 2026-01-19
Ozmoo Stable 15.5 2026-03-02 GPL 2.0
Parchmap Stable 15 2023-06-17
Parchment Stable 2025.1.14 2025-01-14 MIT (parts under BSD, GPLv2)
Platypus 4+
PSZM Public domain
Puny BuildTools Stable 2.4 2025-07-19 Freeware, see file LICENSE.md for details
PunyInform Stable 6.7 2026-06-12 MIT
PunyInformES Stable 2.4.1 2026-03-06 MIT
PunyInformFR 3.2 2025-08-07 MIT
Rezrov 0.20 2010-06-03
ScummVM Stable 2.9.1 2025-05-25 GPL
Spatterlight Stable 1.4.9 2026-03-22 GPL3
Status Line Stable 3.0.1 2025-02-15
Text Fiction Unmaintained 2.6 2014-09-17
Thunderword Unmaintained
Triform Unmaintained 1.2b
Twisty Unmaintained
UnZ Beta 0.16 2025-07-10 GPL3
Vezza Stable 2025-02-09 Mixed GPL 2
Viola 0.8 2014-05-10 GNU GPL2+
Windows Frotz Stable 1.28 2026-04-01 GPL-2.0
Windows Frotz 2002
XZip 1.8.2
ZAbbrev (C Sharp) Stable 0.11 2024-12-28 MIT
ZAbbrev (C) dev-5-9abdeec 2026-04-05 The GNU General Public License, version 3 or any later version
Zart 2.0.5 2025-12-30 MIT
Zasm Unmaintained 0.01 1998-03-16 GPL2+
Zawk Beta 2024-03-11 GPL3
Zax Beta 0.92 2018-12-09 MIT
ZDevtools Stable 2.1.2 2023-10-07 MIT
Zeugma 1.2 2013-10-01 MIT
Zilch Unavailable
ZILF Stable 1.9 2026-06-13 GPL3
ZLR Beta
ZMPP Unmaintained 2.1.1 2016-04-07
ZoIP Unavailable 0.21 2006-09-17
Zoom Unmaintained 1.1.5 2011-11-06 LGPL-2.1
Zork Machine Interpreter and Debugger 9 2016-08-29 Public domain
ZPlet Unmaintained
Ztools Stable 7/3.1 1998-11-07
ZXZVM Stable 1.12 2016-05-15 GPL
Zym Stable MIT

Operating Systems

NameDOSLinuxWindowsMac ClassicMac OS XFreeBSDSolarisFamicomGameboy.NET/MonoGameboy AdvanceWindows CEPalmOS
Aimfiz??Yes????NoNoNo???
Bocfel?????????????
CellarDoor?????????????
Filfre??Yes??????????
Fizmo?YesYes?Yes????????
Flaxo?????????????
Foblub?????????????
FrotzYesYesYes?YesYes????YesYes?
Fweep (interpreter)?YesYes????NoNo????
Infgmb????????Yes????
Infuse?Yes???????????
JzipYesYes???YesYes??????
Malyon?????????????
MaxZip???Yes?????????
NitfolYesYes?YesYes????Yes???
Rezrov?????????????
Viola?YesYes??????????
XZip?Yes???Yes???????
Zax?????????????
Zeal?Yes???????????
Zip?????????????
ZLR?YesYes????NoNoYesNo??
ZMPP?????????????
Zoom?Yes??YesYes???????
Zterp?????????????
ZVM (ifvms.js)?????????????
ZXZVM?????????????


Here is the equivalent information from the new database:

Name System System details
(U)nix IF Development Server Retro (u)nix command line shell account.
Aimfiz Windows
Bocfel Windows • macOS • Linux
Borogove Browser
CellarDoor Other
CliFrotz Other PalmOS
CPCZVM Amstrad CPC
Cugel macOS MacOS X (Cocoa)
Dialog Browser • Windows • Linux An online editor is available: see [[Borogove]].
Dialog-Tool Windows • macOS • Linux
Discourse Frotz Other System: Discourse forum.
ElseIFPlayer Browser
Emglken Browser • Windows • Linux
Encrusted Browser • Windows • Linux Non-browser version must be built from source with Rust/Cargo development environment
Fabularium Android
Fabularium (F-Droid) Android
Filfre Windows
Fizmo Linux • iOS
Flashonate Browser Flash
Flaxo Browser Flash
Frobnitz Other Palm OS
Frolg
Frotz macOS • Linux • Other
Frotz for iOS iOS
Fweep (interpreter) Windows • Other C source code and Win32 executable available
Gargoyle Windows • macOS • Linux
Gelek Vanilla Linux Ubuntu Touch (GNU/Linux).
Glulx-strings Browser
GLUZMA Other Runs in [[Glulx]] virtual machine
Gnusto Browser
Hunky Punk Android
Ifvms.js Browser • Windows • macOS • Linux Is available as a console app through npm. To use online, see [[Parchment]].
Incant Android
Infocom Frotz Browser
Inform 1
Inform 2
Inform 3
Inform 4
Inform 5
Inform 6 Browser • Windows • macOS • Linux An online editor is available: see [[Borogove]].
Inform 7 Windows • macOS • Linux • browser An online editor is available: see [[Borogove]].
InfoZip Other Psion Series 3, 3a, 3c and 3mx
Infuse Linux Works well for V3-5 games, has both ncurses and "dumb" interfaces (for scripting)
Interl Apple II
JSZM Browser Javascript
Jzip Linux • Other
Krebf Windows • macOS • Linux • Other Ruby with minimal dependencies
Leaflet Browser
Lectrote Windows • macOS • Linux
M3ZVM Tandy TRS-80 TRS-80 Model 3 with 48K
M4ZVM Tandy TRS-80 TRS-80 Model 4/4D/4P running LS-DOS or TRS-DOS 6.2 (real or emulator)
MaxZip macOS
MCA
MInform
Muttonate Browser JavaScript
Nitfol Windows • Linux
ORLibrary
Ozmoo BBC Micro/Acorn Electron • Commodore 64/128 • Other Use a Windows, Mac or Linux computer to run the make script (make.rb) which builds disk image(s) for the system you want to play on (Commodore 64, 128, Plus/4, MEGA65 or Commander X16 + there's a port for Acorn/BBC). You can also use Ozmoo Online instead of installing it on your computer.
Parchmap Browser
Parchment Browser
Platypus
PSZM Other PostScript
Puny BuildTools Windows • macOS • Linux
PunyInform Browser • Windows • macOS • Linux • MS-DOS • Classic Mac OS • Acorn Archimedes • Atari ST • Commodore Amiga • Other PunyInform games can be developed on any platform which the Inform 6 compiler can be built for. There are usually binaries available for Windows and macOS, but you should also be able to build the compiler for Linux, Amiga, Archimedes, Atari ST, BeOS, Mac Classic, OS/2, MS-DOS, Unix, VMS and EPOC.
PunyInformES
PunyInformFR
Rezrov Other Perl
ScummVM Windows • macOS • Linux • iOS • Android • Atari ST • Commodore Amiga • Other Other systems: Nintendo 3DS, Nintendo DS, Nintendo Switch, PlayStation Portable, Playstation Vita, Playstation 3, Sega Dreamcast, RISC OS (see [https://wiki.scummvm.org/index.php/Platforms])
Spatterlight macOS
Status Line Other [[PICO-8]] fantasy console
Text Fiction Android
Thunderword Android
Triform
Twisty Android
UnZ Windows • macOS • Linux
Vezza CP/M • Amstrad CPC • Amstrad PCW • Apple II • Atari 400/800 • MSX • MSX2 • Sinclair ZX Spectrum • Sinclair QL • Tandy TRS-80 • Other Requires minimum z80 and CP/M 2.2 or CP/M 3. Current builds support VT-52, ADM-3a, HGT, VT-100, VT-100 with ANSI colour, and Soroc 120 terminal emulations. Various platform builds tested and available. Atari requires FujiNet/DT80. Supported platforms not listed include Agon, Enterprise 128, Grundy NewBrain, MicroBee, SAMCoupe and Tiki-100.
Viola Other Python
Windows Frotz Windows
Windows Frotz 2002 Windows
XZip Linux
ZAbbrev (C Sharp) Windows • macOS • Linux
ZAbbrev (C) Windows • macOS • Linux
Zart Browser • Windows • macOS • Linux
Zasm Other Perl script
Zawk Windows • macOS • Linux • Other This interpreter runs on awk, gawk and mawk.
Zax Other Java application
ZDevtools Windows • macOS • Linux
Zeugma Commodore 64/128 For Commodore 64 with ≥512 kbyte RAM Expansion Unit only.
Zilch
ZILF Windows • macOS • Linux
ZLR Windows
ZMPP Android
ZoIP Other Bridge between the Z-machine and telephony devices
Zoom macOS
Zork Machine Interpreter and Debugger Other C source code
ZPlet Browser
Ztools Windows • macOS • Linux • MS-DOS • Classic Mac OS • Commodore Amiga • Other OS/2, BeOS, Risc OS
ZXZVM Amstrad PCW • Sinclair ZX Spectrum • Other Spectrum +3/+3e. Spectrum with ResiDOS (thanks to Garry Lancaster). Amstrad PCW (any model, including the PcW16).
Zym Amstrad CPC • Amstrad PCW • MSX2 • Other For SymbOS, an aftermarket operating system for various 8-bit micros

Z-machine Versions

Name12345678Standard Revision Number
AimfizYesYesYesYesYesNoYesYes0
BocfelYesYesYesYesYesPartialYesYes1.1
CellarDoorYesYesYesYesYesYesYesYes?
FilfreNoNoYesYesYesNoNoYes1.1
FizmoYesYesYesYesYesNoYesYes1.0
FlaxoYesYesYesYesYesNoYesYes?
FoblubNoNoYesYesNoNoNoNo?
FrotzYesYesYesYesYesYesYesYes1.1
Fweep (interpreter)YesYesYesYesYesNoYesYes0
InfgmbYesYesYesNoNoNoNoNo?
InfuseNoNoYesYesYesPartialYesYes1.2(WIP)
JzipYesYesYesYesYesNoNoYes1.0
Malyon??Yes?Yes??Yes?
MaxZipYesYesYesYesYesNoNoYes?
NitfolYesYesYesYesYesPartialYesYes?
RezrovNoNoYesYesYesNoNoPartial?
ViolaYesYesYesYesYesYesYesYes1.1
XZipYesYesYesYesYesNoNoYes?
ZaxYesYesYesYesYesNoYesYes"nearly" 1.0
ZealYesYesYesYesYesNoYesYes?
Zip?????????
ZLRNoNoYesYesYesPartialYesYes1.0
ZMPP?????????
Zoom??Yes?YesYes???
ZterpYesYesYesYesPartial????
ZVM (ifvms.js)NoNoNoNoYesNoNoYes1.2
ZXZVM??YesYesYes??Yes?

Z-machine Features

NameColorsStatus LineBeepsSound EffectsTimed InputText FormattingPicturesFont 2Font 3Upper WindowUndoMouseMenusUnicodeSave GamesAuxiliary FilesPiracy CheckInput LogsTranscript
AimfizYesYesYesNoYesYesPartialYesYesYesYesYesNoNoYesYesPartialNoYes
BocfelYesYesNoPartial?Yes??PartialYesYes??YesYes??YesYes
CellarDoor?????YesYes??????PartialYesYes?YesYes
Filfre???Yes???????????????
FizmoYes??YesYesYes??Yes????YesYes??Yes?
Flaxo??????????No???No????
Foblub???????????????????
FrotzYesYesYesYesYesYesYesNoYesYesYesYesYesYesYesYesNoYesYes
Fweep (interpreter)NoPartialPartialNoNoNoNoNoNoNoYesNoNoNoYesYesPartialYesYes
Infgmb???????????????????
InfuseYesYesNoNoYesYesPartialYesYesYesYesYesNoYesYesYesNoYesYes
JzipYes????????Yes?????????
Malyon???????????????????
MaxZipYes????Yes???Yes?????????
Nitfol???Yes??????Yes???Yes????
Rezrov?????Yes??Partial?Yes??????Yes?
ViolaYesYesNoYesYesYesYesNoNoYesYesYesNoYesYesYesNoYesYes
XZip?????Yes?????????????
Zax???????????????????
Zeal??????????????Yes????
Zip???????????????????
ZLRYesYesYesNoYesYesNoNoNoYesYesNoNoYesYesYesNoYesYes
ZMPP???????????????????
ZoomYes????YesYes???Yes???Yes????
Zterp??????????????No???No
ZVM (ifvms.js)Yes?NoNoYesYesNo?NoYesYesNoNoYesYesNoNoNoNo
ZXZVM???????????????????

Save Formats

NameInfocomQuetzalZSAVEOther
AimfizNoNoYesNo
Bocfel????
CellarDoor?Yes??
Filfre????
Fizmo?Yes??
Flaxo????
Foblub????
Frotz?YesNoYes
Fweep (interpreter)NoNoYesNo
Infgmb????
InfuseNoYesNoNo
Jzip?Yes?Yes
Malyon????
MaxZip????
Nitfol?Yes??
Rezrov????
ViolaNoYesNoNo
XZip????
Zax????
Zeal?Yes??
Zip????
ZLRNoYesNoNo
ZMPP????
Zoom????
Zterp????
ZVM (ifvms.js)NoYesNoNo
ZXZVM????

Interpreter Features

NameBlorbiFictionDebuggerDefault Interpreter NumberTandyScrollbackAliasesMultiple UndoCreate Standalone
Aimfiz No No No 4 Yes Yes Yes ? No
Bocfel Yes ? ? ? ? ? ? Yes ?
CellarDoor Yes ? ? ? ? ? ? Yes ?
Filfre Yes ? ? ? ? Yes ? ? ?
Fizmo Yes Yes ? ? ? Yes ? ? ?
Flaxo ? ? ? ? ? ? ? ? ?
Foblub ? ? ? ? ? ? ? ? ?
Frotz Yes ? ? 6 ? ? ? Yes ?
Fweep (interpreter) No No Yes 1 Yes No No No No
Infgmb ? ? ? ? ? ? ? ? ?
Infuse Yes No No 5 Yes No No No No
Jzip ? ? ? ? ? ? ? ? Yes
Malyon ? ? ? ? ? ? ? ? ?
MaxZip ? ? ? ? ? Yes ? ? Yes
Nitfol Yes ? Yes ? ? ? ? Yes ?
Rezrov ? ? Partial 6 ? ? ? Yes ?
Viola Yes ? No 6 ? ? ? Yes ?
XZip ? ? ? ? ? Yes ? ? ?
Zax ? ? ? ? ? ? ? ? ?
Zeal ? ? ? ? ? ? ? ? ?
Zip ? ? ? ? ? ? ? ? ?
ZLR Yes No Yes 6 No Yes No Yes ?
ZMPP ? ? ? ? ? ? ? ? ?
Zoom Yes ? ? 3 ? Yes ? ? ?
Zterp ? ? ? ? ? ? ? ? ?
ZVM (ifvms.js) ? No ? 0 No ? No Yes ?
ZXZVM ? ? ? ? ? ? ? ? ?

Miscellaneous

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