Today we're introducing the Google Apps extensions console, a new tool to help IT departments and in-house applications developers integrate with Google Apps.
In-house developers can now access the same Google Apps extension points first introduced in the Google Apps Marketplace. Applications can create links in the navigation bar (alongside “Calendar” and “Documents”), share a single sign-on with Google accounts, and run inside Gmail using rich contextual gadgets.
The extensions console helps in-house developers create new projects, manage team permissions, retrieve OAuth credentials, and upload their application manifest. Once the app is ready to deploy, administrators can install the app to their domain control panel for wider release.
You can get started with the console documentation to learn more.