Apple OpenStep and Cocoa Evolution

Historical documentation on how NeXTSTEP evolved into macOS and iOS frameworks

NeXT - Wikipedia

Wikipedia article on NeXT, the American computer and software company founded by Steve Jobs.

NeXTanswers

This system allows you to request online technical documents, drivers, and other software, which are then sent to you automatically

NeXTSTEP / OPENSTEP Historical Archive

Preservation site for NeXT hardware, NeXTSTEP OS, and developer tools

NeXTStep 3.3 OS and Developer ISO

These are the ISO files for the NeXT Computers OS, NeXTStep 3.3.The user disc contains all the OS installation stuff, and the Developers disc contains all the...

OS News NeXTSTEP Retrospective

Technical retrospective on the revolutionary interface and architecture of NeXTSTEP

SkeyCalc

An RFC-2289 compliant OTP (S/Key) calculator for for MacOS X, MacOS X Server, and NEXTSTEP

Wikipedia NeXTSTEP Overview

Detailed encyclopedic history of the NeXTSTEP operating system