Microsoft Visual Studio Professional w/ MSDN License & Software Assurance through the Microsoft Open Business Program.
Visual Studio Professional is a unified development experience that enables developers to create multi-tier applications across the web cloud and devices.
It provides the ability to maintain and modernize existing applications while building cutting-edge apps for new platforms such as Windows 8. With Blend for Visual Studio you can design immersive experiences in both XAML and HTML5 for Windows 8 you can rapidly produce out-of-the-box line-of-business applications.
Microsoft Open Business licensing is for small to mid-sized organizations that have less than 250 desktop PCs and who order as few as five licenses. Benefits of Open License include discounts off the retail price of software the ability to track and manage licenses by using online tools and the rights to create a standard image and deploy it on multiple machines and rights to transfer licenses from one machine to another.