This is the Open Group’s official UNIX certification register and promotional description of what UNIX certification means. It explains that only operating systems conforming to the Single UNIX Specification may use the UNIX trademark and lists advantages for enterprises and application developers: portability, consistent services, backward compatibility, vendor choice, and lower porting costs. The register page provides filters by standard (UNIX V7, UNIX 03, UNIX 98, UNIX 95) and emphasizes certification as a vendor‑neutral, global benchmark for availability, scalability, maintainability and interoperability.
The page includes specific certified products and versions, notably multiple IBM entries (z/OS releases and AIX 5/6/7 variants), Hewlett Packard Enterprise’s HP‑UX 11i V3, and legacy SCO UnixWare and OpenServer listings. It also displays the Open Group’s UNIX and certification mark trademarks and copyright notice. Notably absent from the register is Apple’s macOS - Apple/macOS no longer appears among the listed UNIX certified implementations, indicating it has been removed from the official registry.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.