As we discuss Apple's new operating system, there's a strong awareness that, no matter how good Mac OS X itself might be, it can't succeed without applications created outside Apple

In the previous installment of this article we looked at three of the five breeds of programs that run in Mac OS X: Classic, Carbon, and Cocoa. Those three are most notable because they're used for the majority of current Mac OS X programs

In the first two installments of this article, we looked first at Apple's proprietary programming environments for Mac OS X - Classic, Carbon, and Cocoa - and then at its cross-platform Unix layer