Apple and NeXT announce merger (1996)
To this day, people still joke that this was a reverse-acquisition of Apple by NeXT, as Apple entirely switched their software to NeXT's.<p>For the unaware, this is why the macOS/iOS APIs are prefixed with NS (NSObject, NSString...), for NeXTSTEP.<p>I believe iTunes is <i>still</i> based on WebObjects.