The Google Toolbox for Mac OAuth 2 Controllers make it easy for Cocoa applications to sign in to services using OAuth 2 for authentication and authorization.

Features include:

• Complete embedded user interface using WebKit
• Works with Google APIs and with any standard OAuth 2 provider
• Handles sign-in, keychain storage of authorization token, and authorizing of requests
• Independent of other projects

To get started with GTM OAuth 2, read the introduction.

To browse the project source code, visit the Source tab. Library changes are documented in the release notes. To monitor changes, see the feeds page.

If you have a problem or want a new feature to be included in the library, please join the GTM-OAuth 2 discussion group or submit an issue.

The library incorporates the GTM HTTP Fetcher project and follows the Google Objective-C Style Guide.

There is a separate project for OAuth 1 controllers.

More useful classes for Mac and iPhone developers are available in the Google Toolbox for Mac.