Are you talking about The Archive? Then I think the answer is "yes", it only works on a Mac or in the Mac OS, to be more precise.
If you are talking about ZK software generally, then there are a number that work in other operating systems. For example, you might check out Zettlr, which works in the Mac OS, in Windows, and in several flavours of Linux. See:
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@ramonbarros
Are you talking about The Archive? Then I think the answer is "yes", it only works on a Mac or in the Mac OS, to be more precise.
If you are talking about ZK software generally, then there are a number that work in other operating systems. For example, you might check out Zettlr, which works in the Mac OS, in Windows, and in several flavours of Linux. See:
https://www.zettlr.com/download
The same is true of Obsidian:
https://obsidian.md/download
Having said that, if you are working in the Mac OS, I love The Archive.