GoKawiilmacOS quietly dropped from The Open Group's official UNIX registry
Apple's macOS has disappeared from The Open Group's public list of certified UNIX systems, without any formal announcement from either party. The Single UNIX Specification registry is the official record of operating systems certified to use the UNIX trademark, and macOS had held that certification for years.
GoKawiil's interpretation of the reporting above, not reported fact.
Losing certification status, even quietly, could raise questions about whether Apple still maintains compliance testing for macOS against the Single UNIX Specification or has simply let the certification lapse. It may have limited practical effect for most users, but it could matter for enterprises or developers who rely on formal UNIX certification as a procurement or compatibility benchmark.
- macOS no longer appears on The Open Group's official UNIX certification list
- Neither Apple nor The Open Group has issued a public statement explaining the change
- The move raises questions about Apple's ongoing commitment to formal UNIX compliance
Apple MacBook Air M2 — Even though macOS has quietly lost its official UNIX certification, it's still built on a UNIX-like Darwin core, giving developers a familiar terminal and POSIX-compliant environment. The MacBook Air M2 is a great way to keep using that Unix-style workflow with excellent battery life and performance for coding on the go.
See Apple MacBook Air M2 on Amazon → Affiliate link — we may earn a commission on purchases, at no extra cost to you. Product picked by AI based on this article; it is not a tested recommendation.Source: opengroup.org, 2026-10-10
Published there as: “Apple/macOS silently removed from official Unix registry”
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