NeXTSTEP DemoYouTube - NeXTSTEP Release 3 Demo
the beginnings of Mac OS X
strictly speaking the Intel Mac is a unix box with a Mac OS shell
Leopard is an Open Brand UNIX 03 Registered Product, conforming to the SUSv3 and POSIX 1003.1 specifications for the C API, Shell Utilities, and Threads.
Since Leopard can compile and run all your existing UNIX code, you can deploy it in environments that demand full conformance — complete with hooks to maintain compatibility with existing software.
The Terminal application in Leopard takes advantage of the operating system’s native text and graphics capabilities, using Input Manager and Core Text to fully support non-English languages. The updated layout engine provides very fast rendering of ASCII, ISO, and Unicode text, and a new user interface gives users around the world the ability to harness the power of UNIX.