> Apple did not "fork" anything, and certainly not OpenBSD. Their core OS (Darwin) was developed by NEXTStep. It reused chunks of the original BSD (from which F

> Apple did not "fork" anything, and certainly not OpenBSD. Their core OS (Darwin) was developed by NEXTStep. It reused chunks of the original BSD (from which FreeBSD, NetBSD and OpenBSD were all forked at one point or another) mostly for I/O interfaces, but the actual kernel architecture is very different. That's wrong. Apple pulled in and integrated a lot of code from FreeBSD itself to modernize NeXTStep. https://wiki.freebsd.org/Myths https://wiki.freebsd.org/Myths: > most userland utilities and the C library on OS X are derived from FreeBSD versions > The XNU kernel used on OS X includes a few subsystems from (older versions of) FreeBSD, but is mostly an independent implementation.