For example, NeXTSTEP was ported from the original 68k-based NeXT workstations to x86 and other architectures before NeXT was purchased by Apple,and OPENSTEP was later ported to the PowerPC architecture as part of the Rhapsody project.
На архитектуру OS X повлияла OpenStep, которая была задумана как портируемая операционная система (например, NeXTSTEP была портирована с оригинальной платформы 68k компьютера NeXT до приобретения NeXTSTEP компанией Apple).