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A full suite of free developer tools is available to Mac OS X developers, who can speed up their development process by using these tools to prototype, compile, debug, and optimize their software products. Xcode, Apple's integrated development environment, can be used with Cocoa, Carbon, or Java. Apple also provides a wide selection of open source tools, such as GCC.

A guided introduction for developers new to Mac OS X developer tools.   Essential information for developers using the Xcode software development tool set.   Objective-C API references organized by framework.
Tools Topics
View the complete Tools Sample Code List.
Tools for developing scripts and script-driven applications using AppleScript.   Open source and Apple-specific tools for code generation and debugging.   Open source developer tools such as GCC and GDB.

Tools and techniques for packaging and installing software.   An application for designing user interfaces and connecting actions to code.   Tools for developing and distributing Java applications on Mac OS X.

Resources for measuring, evaluating, and improving code performance.   A mechanism for performing operations and controlling applications using scripts.   Tools for creating and deploying web applications using WebObjects.

Apple's IDE for developing applications, libraries, plug-ins, and more.    

View legacy technologies, including technologies, features, products, APIs, and programming techniques that are no longer supported or have been superseded.