Unverified50% confidenceFactExact time
FreeBSD, NetBSD and OpenBSD, systems directly descended from UNIX lineage, are not certified as UNIX by the Open Group.
1
Sources
50%
Confidence
Long-term
Relevance
10/22/2026
First Seen
Sources
macOS Is No Longer UNIX: Apple Didn't Renew Certification, But the Technology Is Unchanged
youtubeThe Lunduke Journal10/22/2026
Related Entities
Related Claims
UnverifiedLinux is a UNIX-like system, but it likewise has not obtained UNIX certification from the Open Group.77% similarUnverifiedLinux compatibility layers (such as FreeBSD's linuxulator and NetBSD's Linux emulation) implement the Linux system call interface in the native kernel so that Linux binaries can run without modification.66% similarUnverifiedBSDun is an open-source project whose goal is to add native support for FreeBSD ELF binaries to the Linux kernel, allowing FreeBSD programs to run on the Linux kernel without recompilation.66% similarUnverifiedFreeBSD's Linuxulator acts as a translation layer within the FreeBSD kernel to allow Linux software to run on FreeBSD, and after nearly two decades of development it can run complex Linux applications such as Steam and Chrome.65% similarUnverifiedThe OpenSSH implementation is maintained by the OpenBSD team and comes pre-installed on almost all mainstream Linux distributions and macOS.64% similar
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