NeXTSTEP OS shaped macOS and iOS

NeXTSTEP OS developed by Steve Jobs during his exile at NeXT influenced macOS and iOS. The operating system introduced a clean, user-friendly Unix interface that made Unix more accessible. Jobs aimed to 'make Unix taste sweet' as described by author Geoffrey Cain. The NeXTSTEP codebase forms the foundation of Apple's current desktop and mobile operating systems.