Android applications for Windows phone 7

As promised back in April, Microsoft has today released an Android to Windows Phone API mapping tool for developers which will help developers port existing Android applications to the Windows Phone platform. Like its iPhone counterpart, the tool doesn't actually port your code for you automatically. Instead, what it provides is a list of API mappings that acts like a translation dictionary from one platform to the next. Read Write Web

In basic terms!
This will allow Windows Phone 7 users to run Android like applications ("apps").
The new tool, available here for free is a part of a new package aimed at Android developers looking to extend their apps to other platforms  The new tool, available here for free, is a part of a new package aimed at Android developers looking to extend their apps to other platforms. Also included is a "Windows Phone 7 Guide for Android Application Developers" white paper which contains 90+ pages of information to help you learn Windows Phone.