Visual Studio Developers: Download and Install Windows Azure SDK for .NET. Download the version that matches your version of Visual Studio, either 2010 or 2012.
Download Windows Azure tools for Visual studio
Note: If you do not have Visual Studio, Download Visual Studio Express free-of-cost: Visual Studio Express 2012 for Web is a set of free development tools you can download and install before installing Windows Azure SDK for .NET.
Download Express 2012 Products, Express for Web
PHP Developers: The Windows Azure SDK for PHP enables PHP developers to take advantage of the Microsoft Cloud Services Platform -Windows Azure.
PHP Developer Center
Windows Azure SDK for PHP (select the version that best fits your development environment)
Java Developers: The Windows Azure SDK for Java gives developers a speed dial to leverage Windows Azure Storage services. This SDK is used in the Windows Azure Tools for Eclipse project to develop the Windows Azure Explorer feature.
Java Developer Center
Node.js Developers: Deploy in seconds using Git with Windows, Mac, or Linux.
Node.js Developer Center
Python Developers: Create Python Django web sites, develop Python Django apps with Visual Studio, and more!
Python Developer Center
Mobile Developers: Windows Azure Toolkits for Mobile Devices including iPhone and Android.
Windows Azure Mobile SDKs