Microsoft Visual Studio 2010 Ultimate License through the Microsoft Open Business Program.

IMPORTANT NOTE:  A minimum of 5 licenses is required

Microsoft Visual Studio 2010 Ultimate is the comprehensive suite of application lifecycle management tools for teams to ensure quality results, from design to deployment. Whether you're creating new solutions or enhancing existing applications, Visual Studio 2010 Ultimate lets you bring your vision to life targeting an increasing number of platforms and technologies—including cloud and parallel computing.

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.