I think it would be nice if additional memory checkers and profilers worked on Mac OS X, but the article doesn't mention the (extremely powerful) suite that doe

I think it would be nice if additional memory checkers and profilers worked on Mac OS X, but the article doesn't mention the (extremely powerful) suite that does come with the OS: Instruments. API stability is a question of the framework, I suppose. Objective-C as a language isn't really in the same league as C as far as API stability, because it's fairly easy to deal with evolving parts in a semi-dynamic language. Perhaps that is why Apple is more careless when it comes to changing things. Package management has a place in my heart, too, though. I have seen many attempts to do this that fall far short, and not just on Mac OS X. I suppose what I'd really like is something as powerful as apt-get, but merged with some kind of App Store; and I hope that Apple is working on such a thing.