Objective-C
Software / AppMentioned in 2 videos
Language used for macOS/iOS development before Swift.
Videos Mentioning Objective-C
A brief history of programming...
Fireship
Language used for macOS/iOS development before Swift.
John Carmack: Doom, Quake, VR, AGI, Programming, Video Games, and Rockets | Lex Fridman Podcast #309
Lex Fridman
The programming language used by NeXT, which had elements that later became part of macOS development and its tools.