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Cocoa is an object-oriented application environment designed for developing Mac OS X native applications. The Cocoa frameworks support rapid development and high productivity. Cocoa provides developers starting new Mac OS X projects the fastest way to full-featured implementations. Applications from other platforms can also be brought to Mac OS X quickly using Cocoa.

A guided introduction and learning path for developers new to Cocoa.   Essential information for developers using Objective-C.   Objective-C API references organized by framework.
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Boinx Starts with Sample Code: FotoMagico Is a Powerful Digital Slideshow (HTML)
Starting with Apple sample code, tools and technologies, Boinx wrote FotoMagico in a matter of months.
General, Graphics & Imaging 2007-12-11
Leopard Technology Series for Developers: Graphics & Media Overview (HTML)
Describes Leopard's graphics and media capabilities.
Graphics & Imaging 2007-12-11
Leopard Technology Series for Developers: Objective-C 2.0 Overview (HTML)
Describes features and capabilities introduced in Objective-C 2.0.
Objective-C Language, Tools 2007-12-11
Checkout Lets You 'Get a Mac, Start a Store': Madebysofa Does It with Python and Cocoa (HTML)
Success story on how Mac-only Checkout was built using Python and Cocoa.
General, Scripting & Automation 2007-07-10
Leopard Technology Series for Developers: Broadcast Your Application's Content with iChat Theater (HTML)
Leopard Overview article on using the Instant Messaging framework.
Apple Applications 2007-05-22
Using the Web Services Core Framework and CFNetwork to Access Remote SOAP Services (HTML)
Learn how to access remote SOAP-based web services that require HTTP Basic or Digest authentication.
Internet & Web, Networking 2007-03-07
Kerberos: Highly Secure Single Sign On Authentication in Mac OS X (HTML)
Learn how you can take advantage of Kerberos in your application.
Security 2007-02-05
Leopard Technology Series for Developers: Leopard Developer Application Technologies Overview (HTML)
Learn how Leopard will help you create powerful and innovative features for your users.
Design Guidelines 2006-12-07
Leopard Technology Series for Developers: Leopard Developer Tools Overview (HTML)
Learn how Leopard developer tools make it easier than ever to create exciting applications.
Tools 2006-11-15
Going Universal: Audio Developers Catch the Wave (HTML)
Learn how audio developers who built universal binaries of their applications are reaping the benefits.
Audio, Porting 2006-07-18
Using the QTKit Framework (HTML)
Learn how the QuickTime Kit works and how to use it in your application.
QuickTime 2006-06-19
Developing Games on Mac OS X Using Third-Party Game Engines (HTML)
Create your own game using the powerful game engines that run on Mac OS X.
Games 2006-06-05
Taking Advantage of PDF Kit in Your Cocoa Application (HTML)
Learn to handle PDF documents in your Cocoa application without writing a lot of custom code.
Graphics & Imaging 2006-02-20
Working with Quartz Composer (HTML)
Learn to build a sample composition without having to write code.
Graphics & Imaging 2006-02-13
The Sound of Opportunity Knocking: The Audio Units Community Takes Off (HTML)
Learn how one developer created a successful business using audio units.
Audio 2005-10-31
Designing Network-Friendly Applications (HTML)
Learn to make your application management-aware and reliably accessible on a network.
Design Guidelines 2005-10-24
Taking Advantage of the Accelerate Framework (HTML)
Learn how your application can run on PowerPC- or Intel-based Macs without processor-specific customization.
Performance 2005-10-03
Scoping Your Transition Projects (HTML)
Learn how to transition to Intel-based Macs.
Intel-Based Macs, Porting 2005-09-27
Adopting Universal Binaries on Mac OS X (HTML)
Learn about universal binaries and how to get your applications ready for Intel-based Macs.
Intel-Based Macs, Porting 2005-08-26
Using PyObjC for Developing Cocoa Applications with Python (HTML)
Learn how to build a sample Cocoa app using the Cocoa-Python bridge PyOjbC.
Scripting & Automation, Tools 2005-08-15
Simplifying Data Handling with Uniform Type Identifiers (HTML)
Learn to use UTIs to take advantage of key Mac OS X technologies in your application.
Data Management, File Management, Interapplication Communication 2005-07-12
Porting Multithreaded Applications from Win32 to Mac OS X (HTML)
Learn how Mac OS X handles multithreading, before porting your Win32 application.
Performance, Porting, Process Management 2005-06-20
Integrating Sync Services into Your Application (HTML)
Learn how to sync any kind of data in your application using Sync Services.
Apple Applications, Internet & Web, Syncing 2005-06-06
Tiger Developer Overview Series: Developing with Core Data (HTML)
Learn to use Core Data to define your application's data model graphically.
Data Management, Design Guidelines 2005-04-04
Tiger Developer Overview Series: Developing with Core Image (HTML)
Learn how Core Image can help you take your graphics development to the next level.
Graphics & Imaging 2005-03-09
Turn up the Volume with Audio Units (HTML)
Learn to build a sample volume unit, test it, and integrate it into GarageBand.
Audio 2005-01-31
Using the .Mac SDK (HTML)
Learn how the .Mac SDK can enhance your application with powerful web-integration features.
Interapplication Communication, Internet & Web 2005-01-25
Tiger Developer Overview Series: Developing Dashboard Widgets (HTML)
Learn how to create powerful mini-applications quickly and easily.
Apple Applications 2004-12-07
Tiger Develop Overview Series: Working with Spotlight (HTML)
Learn to make the most of Spotlight's powerful search technologies within your own applications.
File Management 2004-10-07
Cocoa and AppleScript: From Top to Bottom (HTML)
Learn how to activate AppleScript in your application so that users can create scripts.
Scripting & Automation 2004-08-23
Universal Access: Computers That Everyone Can Use (HTML)
Learn how to make your applications usable by everyone, including those with disabilities.
Accessibility 2004-08-02
Binding your Preferences in Cocoa (HTML)
Learn to use bindings by creating a simple app.
Design Guidelines, User Experience 2004-04-26
Using the Web Kit for Application Registration (HTML)
Learn how to use the Web Kit to handle your application's online registration.
User Experience 2004-03-09
Maximizing Mac OS X Application Performance (HTML)
Learn how to achieve better performance on Mac OS X.
Performance 2003-06-23