Azure Resource Explorer

Introducing Azure Resource Explorer for the Azure Resource Management APIs - Scott Hanselman

"Go hit http://resources.azure.com/ and login with your Azure Credentials. It's an Object Explorer if you've ever used Visual Studio to move around a large object model, except this is a resource try of all the hypermedia nodes within your view of Azure."

Azure Resource Explorer: a new tool to discover the Azure API | Microsoft Azure Blog
Azure Resource Explorer - YouTube

Alternatives: There's a PowerShell interface to Azure, this xplat nodejs one I'm using, as well as other libraries like the Azure Management Libraries for .NET again, all calling the backend REST API.
Managing the Cloud from the Command Line - Scott Hanselman