Aqua

If your program has a visual interface, it should adhere to the human interface guidelines for Aqua, which include tips for how to lay out your interface and manage its complexity. For more information, see “Aqua.”

Quick Look

Introduced in Mac OS X v10.5, Quick Look generates previews of user documents that can be displayed in the Finder and Dock. These previews make it easier for the user to find relevant information quickly without launching any applications. For more information, see “Quick Look.”

Bonjour

Bonjour simplifies the process of configuring and detecting network services. Your program can vend network services or use Bonjour to be a client of an existing network service. For more information, see “Bonjour.”

Accessibility technologies

The Accessibility interfaces for Carbon and Cocoa make it easier for people with disabilities to use your software. For more information, see “Accessibility.”

AppleScript

AppleScript makes it possible for users to automate complex workflows quickly. It also gives users a powerful tool for controlling your application. For more information, see “AppleScript.”

Internationalization

Mac OS X provides significant infrastructure for internationalizing software bundles. For more information, see “Internationalization and Localization.”

Keychain Services

Keychains provide users with secure access to passwords, certificates, and other secret information. Adding support for Keychain Services in your program can reduce the number of times you need to prompt the user for passwords and other secure information. For more information, see “Keychain Services.”