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elliotnunn
cdg5
Mobile & Desktop2020–2025
elliotnunn / cdg5

cdg5

Project to reverse-engineer the Classic Mac OS

Mobile & Desktop
Explore on GitHubRead Hacker News discussions
2Distinct people
2Mentions
0Explicit recommenders
137GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Project to reverse-engineer the Classic Mac OS

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 3:56:07 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year2 dated mentions

Observed mentions: 2020-11-04 22:43:06 UTC to 2025-06-26 16:06:17 UTC.

012020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments20202021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2025

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC110
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC000
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC101

What Hacker News says

2 sources
duskwuff·Jun 26, 2025
> Am I misunderstanding this, or is this the source code to Apple System 7.1? More or less, yes. It only encompasses the system (i.e. not applications like the Finder) and isn't entirely complete, but it's still a great window into the world of Apple pre-OS X. > There seems to have been a mailing list about this codebase from 02018 to 02021: https://lists.ucc.gu.uwa.edu.au/pipermail/cdg5/ This mailing list was for a set of projects which focused on taking this code dump (among other things) and making it compile, ideally to reproduce released binaries. https://github.com/elliotnunn/cdg5
In -2000 Lines of code (2004)

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