Mac OS X Internals: A Systems Approach (ISBN 0321278542)

The one and only OS X reference tome.:
This is analogous to the Windows Resource Kits for OS X, only better. The many examples, most using some sort of code to make their point, combined with the depth of topics covered, makes this the one book really serious OS X coders and admins need to have. Like it's cousin, the MS ResKit, it's dry, concise, and may scare off some folks. And like the ResKit, it's just as essential as a learning tool and reference book rolled into one. I've seen many reviews that talk about this book as a book for programmers. I don't believe that for one second. I've heard many references to the old days when all admins were programmers and heard tell of greybeard hackers who are equally proficient at both coding and admin work. This book does a similar job of blending the lines between the two tasks, illustrating concepts and giving examples using C and scripting as well as using human readable english. As a non-coding UNIX and OS X aficionado, I look forward to broadening my knowledge of both programming and unix administration as it applies to OS X via this awe-inspiring book.

Amazing work:
This well written books contains everything you need to know about the internals of Max OS X. This book is enormous and really goes deep into the internal of the OS. This reading gave me the satisfaction of understanding the inner working of Mac OS X which now make my work as a software engineer much easier because I know what is going on. The book is well balanced in that it cover all the different aspects of the operating system without getting into unecessary details. One small complaint is that the chapter describing the hardware architecture focus on PowerPC systems. I would of course have rather have a detail explanation of the Intel platform. Maybe in a second edition.

It's HUGE:
It's enormous! And every page has information useful to someone who develops on the Mac. This book is the ultimate tome of reference for the serious Mac developer. It's also a significant contender as a tome of reference for IT support for the Mac. Finally, it is the best reference for someone with a Windows background who's wondering if Mac OS might be superior technically (leaving aside user interface). (it is.) All the gory details of how a Mac OS is put together from Mach to Cocoa are covered and then some. The author is a hard-core expert who put a lot into this book. Well worth the price!

Very Well Written:
I'd been meaning to buy this book for over a year and was not disappointed. It is very well written, easy to understand and goes quite into depth regarding OS X.

An excellent and informative book:
I enjoyed the writing style of the author, well presented information with bits of humor to keep it interesting. I enjoyed reading the history of OS X and learning how all the parts were brought together to create the most enjoyable computing experience I have ever had. The technical information and programming examples are extremely helpful in better understanding how things work under the elegant aqua interface.