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Classic Mac OS decomps & recomps

15 community projects rebuild Classic Mac OS software: 0 static recompilations, 2 decompilations and 4 ports, rewrites and clean-room builds, plus 9 apps, tools and preservation projects. Most-starred first; GitHub data as of 2026-10-18.

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Decompilations

ProjectOriginalStatusMadeLatestStars
bdc_disasmBeyond Dark Castle 1987stalledHuman-led—14
The Sims 1 Mac decompilationThe Sims (Mac OS 9 port)stalledHuman-led—14

Ports, rewrites & clean-room builds

ProjectOriginalStatusMadeLatestStars
NanosaurNanosaur 1998releasedHuman-ledv1.4.4
Feb 5, 2023		474
Open Reckless Drivin'Reckless Drivin' 1998stalledHuman-led0.0
Apr 29, 2022		52
Candy CrisisCandy Crisis 1996releasedNot statedv3.0.0
Feb 11, 2023		36
MacWolfSDLWolfenstein 3D (Macintosh) 1994archivedHuman-ledv1.2
Aug 18, 2025		20

Apps & creative tools

ProjectOriginalStatusMadeLatestStars
ViperCard playableApple HyperCard 1987stalledHuman-led—362
gsasmApple MPW IIgs cross-development toolswipNot stated—12

OS & system

ProjectOriginalStatusMadeLatestStars
Infinite MacClassic Mac OS and early Mac OS X 1984releasedHuman-led—1.6k
Basilisk II and SheepShaver68k and PowerPC Macintosh 1984releasedHuman-led—505
Advanced Mac SubstituteClassic Mac OS (68K Toolbox) 1984wipHuman-led—374
System7Apple Macintosh System 7 1991wipAI-assistedv0.1.2350-bd7e84d9
Oct 3, 2026		367
ExecutorClassic Mac OS Toolbox 1984archivedHuman-led—289

RE tooling

ProjectOriginalStatusMadeLatestStars
resource_dasmClassic Mac OS apps, resource forks and GameCube gamesreleasedHuman-ledv2026-09-03
Sep 3, 2026		158

Preservation & revivals

ProjectOriginalStatusMadeLatestStars
Macintosh GardenClassic Macintosh softwarereleasedHuman-led——