Apple/macOS removed from official Unix registry

The Open Group official register of UNIX Certified Products

Only systems that are fully compliant and certified according to the Single UNIX Specification are qualified to use the UNIX® trademark.

Advantages of UNIX Certification

The Open Group UNIX standards offer the most stable, portable and cost-effective applications development environment for a wide range of platforms from mobile devices to mainframes. For end-user enterprises, procuring certified UNIX systems ensures the highest level of availability, scalability, and maintainability for those who want to focus on their business with confidence in their IT.

UNIX certification is a trusted and open system industry standard, ensuring that products conform to the most exacting criteria for portability, compatibility, and global interoperability. This enables buyers to specify UNIX conformance in procurements, facilitates Boundaryless Information Flow™, and enhances the perception of the UNIX system as a consistently stable, flexible, and reliable operating system.

Benefits for Application Developers

UNIX® and the Open ‘O’ and Check Certification Mark logo® are registered trademarks of The Open Group.

Copyright © The Open Group, All Rights Reserved

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