Parallels Desktop for Mac is a hypervisor-based virtualization solution that makes it easy to run any number of operating systems inside separate windows on your Mac desktop. For developers, this means you can simultaneously run Xcode on Mac and Visual Studio on Windows 8. The Parallels window behaves like a normal Mac window, so you can copy content from your desktop and place it directly into the Parallels virtual machine instance just as you would from one Mac window to another. You can even run Visual Studio (and other Windows applications) directly on the Mac OS X desktop (no Windows VM window, just the app).
Microsoft Visual Studio
Microsoft Azure Stack is an extension of Azure—bringing the agility and innovation of cloud computing to your on-premises environment and enabling the only hybrid cloud that allows you to build and deploy hybrid applications anywhere. In a prematurely revealed blog post, the company has revealed that it's working on Visual Studio for Mac -- yes, one of the mainstays of the Windows world is headed Apple's way.
For cross-platform development of iOS apps, Windows Store Apps, and Windows Phone 8 apps, Parallels is unparalleled since you can work with two different operating systems and related dev tools at the same time, in the same session, from the same desktop.
Microsoft Visual Studio Express 2013 For Mac
Here, Kurt Schmucker, a product manager at Parallels, gives a brief summary of Parallels Desktop and demonstrates how to run Windows 8 and Visual Studio 2012 on your Mac without rebooting to a Windows partition first. Kurt demonstrates the Visual Studio Windows Phone emulator running along side the Xcode iPhone emulator.