Just as a note if you're looking for similar programs or alternatives, Shaun Inman[0] released something like this a long time ago called Day-0. I've been using it on the MacBook I'm currently typing this on since 2012.

He's updated it a few times over the years to deal with new versions of macOS not cooperating with the old build.

Website seems to be down due to Media Temple merging into GoDaddy, according to the description of the GitHub repo[1] mirroring the old content, but the Day-0 zip archives[2] are still there. Of course, it feels weird to download and install a zip from a GitHub archive without any context, so I guess it's probably dead now.

There'

I think the first version was released sometime around 2011 and the most recent update[3] was in 2020.

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[0]: https://twitter.com/shauninman

[1]: https://github.com/shauninman/shauninman.com

[2]: https://github.com/shauninman/shauninman.com/tree/main/asset...

[3]: https://web.archive.org/web/20230317115926/https://shauninma...