- Apple Developer Connection
- Apple's development resources for OS X, offering tech articles and sample code, Xcode tools, the iPhone Dev Kit, ADC news, and more. - Apple Developer Connection Reference Library
- Collection of Apple technical resources, including documentation, technical notes, sample code, technical Q&As, and release notes. - Apple Developer Connection: Games
- Overview of Apple's options and technologies for game developers, with OpenGL, OpenAL, Velocity Engine, and the Mac OS X development and performance optimization tools. - Automator World
- Clearinghouse of user-contributed Workflows and Actions, as well as information, news, and tips for the Mac OS X 10.4 (Tiger) scripting application Automator. - Cocoa Dev Central
- Learn Mac OS X programming through tutorials, blog posts, and more. - CocoaRadio
- Podcast interviews with Cocoa developers for developers, power users, and anyone interested in the OS X platform. - Mac Geekery
- Provides a place where more advanced users of the Macintosh hardware platform can get together and share tips, hacks, and generally arcane things without fear of the user level of the recipients. - MacDevCenter.com
- Articles and news from the O'Reilly Network. - Open Source Projects at Apple
 - Theocacao
- Scott Stevenson's blog devoted to programming in Cocoa.
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